Join four right angles at a point using different right-angled polygons | Maths

Starter quiz

Which of these images shows a right angle?
- a ✓
- b
- c
- d ✓
Which of these shapes has at least one right angle?
- a ✓
- b
- c
- d ✓
- e ✓
Which of these shapes have angles larger than a right angle?
- a
- b ✓
- c ✓
- d ✓
- e
Complete this sentence. All rectangles have ______ right angles.
- '4' ✓
How many right angles does this shape have?
- '4' ✓
Which statements are correct?
- All squares have four right angles. ✓
- All triangles have no right angles.
- All quadrilaterals have at least one right angle.

Exit quiz

How many of each angle does this shape have? Match the number to the type of angle.
- 3
  
  ⇔
  
  angles greater than right angles. ✓
- 1
  
  ⇔
  
  angle smaller than a right angle. ✓
- 0
  
  ⇔
  
  right angles. ✓
How many right angles are equal to one full turn?
- '4' ✓
Look at this shape. How many right angles does it have?
- '1' ✓
Laura joins four of the same shape together around a point. Which of these show what would happen if Laura joined the shapes using only right angles?
- a ✓
- b
- c
- d
Aisha joins four squares together around the point. What shape will the four squares make?
- 'square' ✓
Aisha joins four of these triangles together using right angles around the point. What shape will the four triangles make?
- 'square' ✓

Worksheet

Presentation

Video

Lesson Details

Key learning points

Where four right angles meet, there is a full turn and no gaps between the shapes.
Joining four right angles at a point will always make a full turn.
A right angle is marked with a small square corner inside the angle.

Common misconception

Pupils may not correctly identify right angles within a shape to join them.

Make sure that pupils have opportunities to identify right angles within a range of shapes prior to the lesson. If possible, encourage them to mark the right angles to help them. They should only be joining these right angles around a point.

Keywords

At a point - A point is an exact location. It has no size, only position.