4.17.1

Area of 2D Shapes

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Calculating Area of 2D Shapes

We can use formulae to calculate the area of common shapes.

Triangle

Triangle

  • Area = 12 × base × vertical height.
Parallelogram

Parallelogram

  • Area = base × vertical height.
Trapezium

Trapezium

  • Area = 12 × (a + b) × vertical height.
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1

Number

1.1

Place Value & Ordering

1.2

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1.3

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1.4

Fractions

1.5

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1.6

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1.7

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1.8

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1.9

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1.10

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1.11

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1.12

Percentage Change

1.13

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1.14

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1.15

Using Numbers

1.16

Fractions, Decimals & Percentages

1.17

Powers & Roots

1.18

Accuracy

2

Algebra

2.1

Algebraic Notation

2.2

Substitution & Simplification

2.3

Brackets

2.4

Algebraic Fractions

2.5

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2.6

Functions

2.7

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2.8

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2.9

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2.12

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2.15

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2.17

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2.18

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2.19

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2.20

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2.21

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2.22

Inequalities

2.23

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3

Ratio

3.1

Unit Conversions

3.2

Compound Units

3.3

Ratio Fundamentals

3.4

Advanced Ratio and Scale

3.5

Proportion

3.6

Algebraic Proportion

3.7

Ratios in Practice

3.8

Manipulating Ratios

3.9

Percentage & Interest

3.10

Proportion

3.11

Gradient

4

Geometry

4.1

Area & Perimeter

4.2

Angles

4.3

Trigonometry

4.4

Similarity & Congruence

4.5

Circle Geometry

4.6

Circle Theorems

4.7

Pythagoras

4.8

Surface Area

4.9

Volume

4.10

Vectors

4.11

Introduction to Geometry

4.12

Triangles & Quadrilaterals

4.13

Transformations

4.14

Circle Basics

4.15

Circle Theorems

4.16

Measurements & Units

4.17

Calculating Area

4.18

Triangle Formulae

4.19

3D Shapes

4.20

Vectors

5

Probability

6

Statistics

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