Identify different types of triangle

Maths

Explore, sort and classify triangles

Complete a symmetrical pattern

Explore symmetry by joining two identical shapes

Investigate lines of symmetry in 2D shapes by folding

Find lines of symmetry in 2D shapes

Reflect polygons in a line of symmetry

Reflect polygons that are dissected by the line of symmetry

Diagonal lines of symmetry

Investigate symmetry and symmetrical patterns

In this unit pupils will pupils will complete and compose symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes. In the future unit pupils will explain what area is and measure using counting as a strategy. They will make different shapes with the same area and compare the area of different shapes. 

In the prior unit pupils investigated ways to compose and decompose polygons. They investigated quadrilaterals with and without parallel and perpendicular sides. In this unit pupils will complete and compose symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes.

In this unit pupils will complete and compose symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes.

Properties of 2D and 3D shapes and symmetry

Which of these statements are true for all triangles?

All triangles have 3 straight sides and 3 vertices. Which of the following are triangles?

This triangle has no equal sides and no equal angles.

This triangle has three equal sides and three equal angles.

This triangle has two equal sides and two equal angles.

Match the triangles to the correct description.

An equilateral triangle has 3 sides and 3 angles that are __________. 

Which triangle has no equal sides or angles? 

Match the type of triangle to its properties.

The corners of a shape are called the {{ }}

Which of the statements are true for all polygons?

Match the polygon with the number of sides that it has.

 A right angle is the same as a __________ turn.

Match the names of the polygons with their properties

Which of these shapes are quadrilaterals?

Identify different types of triangle

Lesson outcome