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Geometry Basics

Vertices and edges

Vertices and edges

  • The corners of a polygon are called vertices and the sides are called edges.
Plane

Plane

  • A plane is a flat 2 dimensional surface like the surface of a table.
Parallel lines

Parallel lines

  • If two lines are parallel they point in exactly the same direction and will never meet.
  • Parallel lines are indicated by drawing matching arrows on the lines.
  • If there are two different pairs of parallel lines then different arrows are used for each pair.
Perpendicular lines

Perpendicular lines

  • Two lines are perpendicular if the angle between them is a right angle (90°).
Jump to other topics
1

Number

1.1

Place Value

1.2

Factors & Multiples

1.3

Operations

1.4

Fractions, Decimals & Percentages

1.5

Growth & Decay

1.6

Measurements & Units

1.7

Accuracy

2

Algebra

2.1

Introduction to Algebra

2.2

Graphs

2.3

Solving Equations

2.4

Sequences

3

Ratio, Proportion & Rates of Change

4

Geometry & Measures

4.1

Introduction to Geometry

4.2

Ruler & Compass Constructions

4.3

Perimeter & Area

4.4

Triangles, Quadrilaterals & Circles

4.5

Transformations

4.6

Triangle Formulae

4.7

3D Shapes

4.8

Vectors

5

Probability

6

Statistics

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