Source: https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-6-1-identifying-parts-of-a-circle [Revision notes](https://senecalearning.com/en-gb/revision-notes.md) › [KS3](https://senecalearning.com/en-gb/revision-notes/ks3.md) › [Maths](https://senecalearning.com/en-gb/revision-notes/ks3/maths.md) › [Maths: KS3](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3.md) › Identifying Parts of a Circle # Identifying Parts of a Circle Maths: KS3, topic 4.6.1 ## Identifying Parts of a Circle Learn how to identify the fundamental parts of a circle, including the radius, diameter, circumference, arc, and chord. ### Radius and diameter ![Radius and diameter](https://image-v2.cdn.app.senecalearning.com/2026-05/17671cf5-7007-4513-8600-c7e9d989751c/Screenshot%202026-05-29%20at%2011.15.53.png) - The radius is a straight line from the centre to the edge of the circle. - The diameter is a straight line passing through the centre, touching both edges. - The diameter is always exactly $$2$$ times the length of the radius. ### Circumference and arc ![Circumference and arc](https://image-v2.cdn.app.senecalearning.com/2026-05/a20b3e36-b45e-4f8d-9434-cb785c636520/Screenshot%202026-05-29%20at%2011.15.57.png) - The circumference is the total distance around the outside edge of the circle. - An arc is just a section or part of the circumference. ### Chords and segments ![Chords and segments](https://image-v2.cdn.app.senecalearning.com/2026-05/3c7adaa7-9d1d-4752-93c0-41abbc636126/Screenshot%202026-05-29%20at%2011.16.02.png) - A chord is a straight line connecting any two points on the edge of the circle. - A segment is the area created between a chord and an arc. ## Test yourself on Identifying Parts of a Circle [Practise this topic for free](https://app.senecalearning.com/classroom/course/b4791b6d-e97a-43c7-a84c-d31a18d46945/section/99721ddc-370b-46ed-86b9-08b3c9b3d43a/session) - Previous topic: [4.5.2 Length Scale Factors in Similar Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-5-2-length-scale-factors-in-similar-shapes.md) - Next topic: [4.6.2 Calculating Circumference](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-6-2-calculating-circumference.md) ## Maths: KS3 contents ### 1 Number - 1.1 Place Value & Ordering - [1.1.1 Ordering Integers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-1-1-ordering-integers.md) - [1.1.2 Ordering Decimals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-1-2-ordering-decimals.md) - [1.1.3 Equal Symbols](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-1-3-equal-symbols.md) - [1.1.4 Place Value](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-1-4-place-value.md) - 1.2 Numerical Operations - [1.2.1 Adding Integers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-1-adding-integers.md) - [1.2.2 Subtracting Integers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-2-subtracting-integers.md) - [1.2.3 Multiplying Integers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-3-multiplying-integers.md) - [1.2.4 Dividing Integers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-4-dividing-integers.md) - [1.2.5 Dividing with a Remainder](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-5-dividing-with-a-remainder.md) - [1.2.6 Adding & Subtracting Decimals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-6-adding-and-subtracting-decimals.md) - [1.2.7 Multiplying Decimals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-7-multiplying-decimals.md) - [1.2.8 Dividing Decimals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-8-dividing-decimals.md) - [1.2.9 Adding & Subtracting Negative Numbers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-9-adding-and-subtracting-negative-numbers.md) - [1.2.10 Multiplying & Dividing Negative Numbers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-10-multiplying-and-dividing-negative-numbers.md) - [1.2.11 Multiplying by Powers of Ten](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-11-multiplying-by-powers-of-ten.md) - [1.2.12 Dividing by Powers of Ten](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-2-12-dividing-by-powers-of-ten.md) - 1.3 Fractions - [1.3.1 Writing Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-3-1-writing-fractions.md) - [1.3.2 Simplifying Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-3-2-simplifying-fractions.md) - [1.3.3 Equivalent Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-3-3-equivalent-fractions.md) - [1.3.4 Constructing Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-3-4-constructing-fractions.md) - [1.3.5 Ordering Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-3-5-ordering-fractions.md) - [1.3.6 Recurring Decimal Notation](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-3-6-recurring-decimal-notation.md) - [1.3.7 Mixed Numbers & Improper Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-3-7-mixed-numbers-and-improper-fractions.md) - 1.4 Numerical Operations (Fractions) - [1.4.1 Adding & Subtracting Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-4-1-adding-and-subtracting-fractions.md) - [1.4.2 Add & Subtract Mixed Numbers & Improper Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-4-2-add-and-subtract-mixed-numbers-and-improper-fractions.md) - [1.4.3 Multiplying Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-4-3-multiplying-fractions.md) - [1.4.4 Multiplying Mixed Numbers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-4-4-multiplying-mixed-numbers.md) - [1.4.5 Reciprocals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-4-5-reciprocals.md) - [1.4.6 Dividing Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-4-6-dividing-fractions.md) - [1.4.7 Dividing Mixed Numbers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-4-7-dividing-mixed-numbers.md) - 1.5 Roots & Powers - [1.5.1 Roots](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-5-1-roots.md) - [1.5.2 Integer Powers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-5-2-integer-powers.md) - [1.5.3 Estimating Powers & Roots](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-5-3-estimating-powers-and-roots.md) - [1.5.4 Laws of Indicies (Multiplication)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-5-4-laws-of-indicies-multiplication.md) - 1.6 Structure of Calculations - [1.6.1 Order of Operations (BIDMAS)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-6-1-order-of-operations-bidmas.md) - 1.7 Numerical Skills - [1.7.1 Using a Calculator - Powers, Roots & Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-7-1-using-a-calculator-powers-roots-and-fractions.md) - 1.8 Factors & Multiples - [1.8.1 Divisibility Rules](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-8-1-divisibility-rules.md) - [1.8.2 Finding Multiples](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-8-2-finding-multiples.md) - [1.8.3 Finding Factors](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-8-3-finding-factors.md) - [1.8.4 Finding Prime Numbers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-8-4-finding-prime-numbers.md) - 1.9 Systematic Listing - [1.9.1 Systematic Listing](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-9-1-systematic-listing.md) - 1.10 Standard Form - [1.10.1 Reading Standard Form](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-10-1-reading-standard-form.md) - [1.10.2 Converting to Standard Form (Positive Powers)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-10-2-converting-to-standard-form-positive-powers.md) - [1.10.3 Converting to Standard Form (Negative Powers)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-10-3-converting-to-standard-form-negative-powers.md) - [1.10.4 Converting Form Standard Form (Positive Powers)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-10-4-converting-form-standard-form-positive-powers.md) - [1.10.5 Converting From Standard Form (Negative Powers)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-10-5-converting-from-standard-form-negative-powers.md) - [1.10.6 Adding & Subtracting Standard Form](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-10-6-adding-and-subtracting-standard-form.md) - [1.10.7 Standard Form on a Calculator](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-10-7-standard-form-on-a-calculator.md) - 1.11 Fractions, Decimals & Percentages - [1.11.1 Converting Fractions, Decimals & Percentages](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-11-1-converting-fractions-decimals-and-percentages.md) - [1.11.2 Numbers as Percentages](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-11-2-numbers-as-percentages.md) - [1.11.3 Fractions of Amounts](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-11-3-fractions-of-amounts.md) - 1.12 Percentage Change - [1.12.1 Percentages of Amounts (Calculator)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-12-1-percentages-of-amounts-calculator.md) - [1.12.2 Percentages of Amounts (No Calculator)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-12-2-percentages-of-amounts-no-calculator.md) - [1.12.3 Percentage Change](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-12-3-percentage-change.md) - 1.13 Rounding & Estimation - [1.13.1 Rounding Integers](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-13-1-rounding-integers.md) - [1.13.2 Estimating Calculations](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-13-2-estimating-calculations.md) - [1.13.3 Rounding Decimals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-13-3-rounding-decimals.md) - [1.13.4 Rounding With Significant Figures](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-13-4-rounding-with-significant-figures.md) - 1.14 Bounds & Accuracy - [1.14.1 Finding Error Intervals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/1-14-1-finding-error-intervals.md) ### 2 Algebra - 2.1 Algebraic Notation - [2.1.1 Function Machines](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-1-1-function-machines.md) - [2.1.2 Using Algebraic Notation](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-1-2-using-algebraic-notation.md) - 2.2 Substitution & Simplification - [2.2.1 Substituting into Expressions with Operations](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-2-1-substituting-into-expressions-with-operations.md) - [2.2.2 Substituting into Algebraic Expressions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-2-2-substituting-into-algebraic-expressions.md) - [2.2.3 Substituting into Real-Life Expressions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-2-3-substituting-into-real-life-expressions.md) - [2.2.4 Simplifying Expressions by Collecting Like Terms](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-2-4-simplifying-expressions-by-collecting-like-terms.md) - 2.3 Brackets - [2.3.1 Expanding Single Brackets](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-3-1-expanding-single-brackets.md) - [2.3.2 Expanding & Simplifying with Single Brackets](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-3-2-expanding-and-simplifying-with-single-brackets.md) - [2.3.3 Expanding Double Brackets](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-3-3-expanding-double-brackets.md) - [2.3.4 Factorising Into One Bracket](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-3-4-factorising-into-one-bracket.md) - 2.4 Algebraic Fractions - [2.4.1 Operations with Algebraic Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-4-1-operations-with-algebraic-fractions.md) - 2.5 Rearranging - [2.5.1 Changing the Subject](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-5-1-changing-the-subject.md) - 2.6 Functions - [2.6.1 Finding the Input of a Function](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-6-1-finding-the-input-of-a-function.md) - 2.7 Solving Linear Equations - [2.7.1 Solving Linear Equations (One Step)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-7-1-solving-linear-equations-one-step.md) - [2.7.2 Solving Linear Equations (Multi-Step)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-7-2-solving-linear-equations-multi-step.md) - [2.7.3 Solving Linear Equations (Unknown Both Sides)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-7-3-solving-linear-equations-unknown-both-sides.md) - [2.7.4 Solving Equations (Unknown in Denominator)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-7-4-solving-equations-unknown-in-denominator.md) - [2.7.5 Forming & Solving Linear Equations](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-7-5-forming-and-solving-linear-equations.md) - 2.8 Inequalities - [2.8.1 Representing Inequalities on a Number Line](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-8-1-representing-inequalities-on-a-number-line.md) - [2.8.2 Solving Linear Inequalities](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-8-2-solving-linear-inequalities.md) - [2.8.3 Linear Inequalities with Unknowns on Both Sides](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-8-3-linear-inequalities-with-unknowns-on-both-sides.md) - 2.9 Simultaneous Equations - [2.9.1 Solving Simultaneous Equations Graphically](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-9-1-solving-simultaneous-equations-graphically.md) - [2.9.2 Solving Simultaneous Equations by Elimination](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-9-2-solving-simultaneous-equations-by-elimination.md) - 2.10 Sequences - [2.10.1 Term-to-Term Rules (Patterns)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-10-1-term-to-term-rules-patterns.md) - [2.10.2 Term-to-Term Rules (Numerical)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-10-2-term-to-term-rules-numerical.md) - [2.10.3 Substituting into a Given Rule](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-10-3-substituting-into-a-given-rule.md) - [2.10.4 Position-to-Term Rules](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-10-4-position-to-term-rules.md) - [2.10.5 Finding the Nth Term (Linear Sequences)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-10-5-finding-the-nth-term-linear-sequences.md) - [2.10.6 Simple Geometric Progressions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-10-6-simple-geometric-progressions.md) - 2.11 Coordinates - [2.11.1 Midpoints of Line Segments](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-11-1-midpoints-of-line-segments.md) - 2.12 Linear Graphs - [2.12.1 Equations of Straight Lines](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-12-1-equations-of-straight-lines.md) - [2.12.2 Finding Line Equation from Point & Gradient](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-12-2-finding-line-equation-from-point-and-gradient.md) - [2.12.3 Finding Line Equations from Two Points](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-12-3-finding-line-equations-from-two-points.md) - [2.12.4 Parallel Line Equations](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-12-4-parallel-line-equations.md) - 2.13 Quadratic Graphs - [2.13.1 Interpreting Quadratics](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/2-13-1-interpreting-quadratics.md) ### 3 Ratio, Proportion & Rates of Change - 3.1 Unit Conversion - [3.1.1 Using Clocks](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-1-using-clocks.md) - [3.1.2 Calculating with Time](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-2-calculating-with-time.md) - [3.1.3 Using Timetables](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-3-using-timetables.md) - [3.1.4 Using Calendars](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-4-using-calendars.md) - [3.1.5 Converting Units of Length](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-5-converting-units-of-length.md) - [3.1.6 Converting Units of Mass](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-6-converting-units-of-mass.md) - [3.1.7 Converting Units of Capacity](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-7-converting-units-of-capacity.md) - [3.1.8 Metric Conversions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-8-metric-conversions.md) - [3.1.9 Converting Units of Area & Volume](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-1-9-converting-units-of-area-and-volume.md) - 3.2 Compound Units - [3.2.1 Estimating & Measuring](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-2-1-estimating-and-measuring.md) - [3.2.2 Calculating Speed](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-2-2-calculating-speed.md) - [3.2.3 Best Buy & Unit Pricing](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-2-3-best-buy-and-unit-pricing.md) - [3.2.4 Density, Mass & Volume](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-2-4-density-mass-and-volume.md) - 3.3 Ratio Fundamentals - [3.3.1 Ratio Notation & Simplification](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-3-1-ratio-notation-and-simplification.md) - [3.3.2 Ratios as Fractions and Linear Equations](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-3-2-ratios-as-fractions-and-linear-equations.md) - [3.3.3 Sharing in a Ratio](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-3-3-sharing-in-a-ratio.md) - [3.3.4 Proportion Problems](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-3-4-proportion-problems.md) - 3.4 Advanced Ratio and Scale - [3.4.1 Map Scales & Real Distances](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-4-1-map-scales-and-real-distances.md) - 3.5 Proportion - [3.5.1 Currency Conversion](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-5-1-currency-conversion.md) - [3.5.2 Direct Proportion](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-5-2-direct-proportion.md) - [3.5.3 Inverse Proportion](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-5-3-inverse-proportion.md) - 3.6 Algebraic Proportion - [3.6.1 Direct Proportion](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-6-1-direct-proportion.md) - [3.6.2 Inverse Proportion](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/3-6-2-inverse-proportion.md) ### 4 Geometry & Measures - 4.1 Area & Perimeter - [4.1.1 Perimeter of Simple Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-1-1-perimeter-of-simple-shapes.md) - [4.1.2 Perimeter of Compound Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-1-2-perimeter-of-compound-shapes.md) - [4.1.3 Area of Triangles](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-1-3-area-of-triangles.md) - [4.1.4 Area of Rectangles & Parallelograms](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-1-4-area-of-rectangles-and-parallelograms.md) - [4.1.5 Area of Trapezia](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-1-5-area-of-trapezia.md) - [4.1.6 Area of Compound Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-1-6-area-of-compound-shapes.md) - [4.1.7 Area of Compound Shapes with Triangles](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-1-7-area-of-compound-shapes-with-triangles.md) - 4.2 Properties of Shapes - [4.2.1 Naming & Classifying Triangles](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-2-1-naming-and-classifying-triangles.md) - [4.2.2 Naming & Classifying Quadrilaterals](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-2-2-naming-and-classifying-quadrilaterals.md) - [4.2.3 Properties of Lines](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-2-3-properties-of-lines.md) - [4.2.4 Shortest Distance from a Point to a Line](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-2-4-shortest-distance-from-a-point-to-a-line.md) - [4.2.5 Properties of 3D Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-2-5-properties-of-3d-shapes.md) - 4.3 Angles - [4.3.1 Classification of Angles](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-3-1-classification-of-angles.md) - [4.3.2 Angles on a Line & Around a Point](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-3-2-angles-on-a-line-and-around-a-point.md) - [4.3.3 Combining Angle Facts in Triangles](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-3-3-combining-angle-facts-in-triangles.md) - [4.3.4 Angles on Parallel Lines](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-3-4-angles-on-parallel-lines.md) - [4.3.5 Interior & Exterior Angles in Polygons](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-3-5-interior-and-exterior-angles-in-polygons.md) - 4.4 Trigonometry - [4.4.1 Pythagoras' Theorem](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-4-1-pythagoras-theorem.md) - [4.4.2 Sides in Right-Angles Triangles](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-4-2-sides-in-right-angles-triangles.md) - [4.4.3 Angles in Right-Angled Triangles](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-4-3-angles-in-right-angled-triangles.md) - 4.5 Similarity & Congruence - [4.5.1 Congruent Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-5-1-congruent-shapes.md) - [4.5.2 Length Scale Factors in Similar Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-5-2-length-scale-factors-in-similar-shapes.md) - 4.6 Circle Geometry - [4.6.1 Identifying Parts of a Circle](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-6-1-identifying-parts-of-a-circle.md) - [4.6.2 Calculating Circumference](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-6-2-calculating-circumference.md) - [4.6.3 Calculating Area of a Circle](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-6-3-calculating-area-of-a-circle.md) - [4.6.4 Calculating Arc Lengths](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-6-4-calculating-arc-lengths.md) - [4.6.5 Calculating Area of Sectors](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-6-5-calculating-area-of-sectors.md) - 4.7 3D Representations - [4.7.1 Nets of 3D Shapes](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-7-1-nets-of-3d-shapes.md) - 4.8 Surface Area - [4.8.1 Surface Area of Cubes & Cuboids](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-8-1-surface-area-of-cubes-and-cuboids.md) - [4.8.2 Surface Area of Prisms](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-8-2-surface-area-of-prisms.md) - [4.8.3 Surface Area of Cylinders](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-8-3-surface-area-of-cylinders.md) - 4.9 Volume - [4.9.1 Volume of Prisms](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-9-1-volume-of-prisms.md) - [4.9.2 Volume of Cylinders](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-9-2-volume-of-cylinders.md) - 4.10 Transformations - [4.10.1 Translation using Vectors](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-10-1-translation-using-vectors.md) - [4.10.2 Rotations](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-10-2-rotations.md) - [4.10.3 Enlargements & Positive Scale Factors](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-10-3-enlargements-and-positive-scale-factors.md) - 4.11 Scale Drawings - [4.11.1 Scale Drawings](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-11-1-scale-drawings.md) - 4.12 Bearings - [4.12.1 Bearings](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/4-12-1-bearings.md) ### 5 Probability - 5.1 Single Events - [5.1.1 Writing Probabilities as Fractions](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/5-1-1-writing-probabilities-as-fractions.md) - [5.1.2 Mutually Exclusive Events](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/5-1-2-mutually-exclusive-events.md) - [5.1.3 Expected Results](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/5-1-3-expected-results.md) - 5.2 Combined Events - [5.2.1 Reading Venn Diagrams](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/5-2-1-reading-venn-diagrams.md) - [5.2.2 Venn Diagrams (Set Notation)](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/5-2-2-venn-diagrams-set-notation.md) - [5.2.3 Independent & Mutually Exclusive Events](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/5-2-3-independent-and-mutually-exclusive-events.md) - 5.3 Experimental Probability - [5.3.1 Relative Frequency & Convergence](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/5-3-1-relative-frequency-and-convergence.md) ### 6 Statistics - 6.1 Averages & Range - [6.1.1 Range](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/6-1-1-range.md) - [6.1.2 Median](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/6-1-2-median.md) - [6.1.3 Mode](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/6-1-3-mode.md) - [6.1.4 Mean](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/6-1-4-mean.md) - [6.1.5 Interpreting Two-Way Tables](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/6-1-5-interpreting-two-way-tables.md) - 6.2 Scatter Graphs - [6.2.1 Lines of Best Fit](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/6-2-1-lines-of-best-fit.md) - 6.3 Collecting & Presenting Data - [6.3.1 Types of Data](https://senecalearning.com/en-gb/revision-notes/ks3/maths/maths-ks3/6-3-1-types-of-data.md)