Three right angles make a three-quarter turn.

Know that a right angle describes a quarter turn

Maths

In this unit pupils will rotate two lines around a fixed point to make different sized angles. They will identify vertices. In the future unit pupils will investigate ways to compose and decompose polygons. They will investigate quadrilaterals with and without parallel and perpendicular sides.

In the prior unit pupils ordered and arranged combinations of objects in patterns and sequences. They consolidated understanding of whole, half, quarter and three-quarter turns, in terms of right angles, using mathematical vocabulary to describe position, direction and movement. In this unit pupils will rotate 2 lines around a fixed point to make different sized angles. They will identify vertices

Right angles

Match the number of right angles to the number of turns.

Two quarter turns is the same as a {{ }} turn. 

The hand on this clock makes a quarter turn anticlockwise. Which number does it point to? {{ }} 

The hand on this clock makes a quarter turn clockwise. It will point to number {{ }}. 

True or false. When you make a half turn, the direction doesn't matter.

Which of these sentences describe a right angle?

How many right angles does this shape have?

True or false. The hands on this clock show a right angle.

The right angle shows the turn between which numbers on the clock?

Which of the images is not showing a right angle?

Which of the capital letters have at least one right angle?

This lesson will soon be taken down.

Know that a right angle describes a quarter turn

Lesson outcome