New
New
Join four right angles at a point using different right-angled polygons
I can recognise right angles and describe what happens when they are joined at a point.
Lesson 9 of 10
New
New
- Year 3
Join four right angles at a point using different right-angled polygons
I can recognise right angles and describe what happens when they are joined at a point.
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.
Keywords
At a point - A point is an exact location. It has no size, only position.
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.
If possible, give the pupils opportunities to investigate a range of shapes using manipulatives that they can turn over and draw around (coloured plastic shapes work very well for this). Ensure that pupils have a range of shapes, with and without right angles.
Teacher tip
Licence
This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which of these images shows a right angle?
Which of these images shows a right angle?
b
c
Q2.Which of these shapes has at least one right angle?
Which of these shapes has at least one right angle?
b
c
Q3.Which of these shapes have angles larger than a right angle?
Which of these shapes have angles larger than a right angle?
a
e
Q4.Complete this sentence. All rectangles have right angles.
Complete this sentence. All rectangles have right angles.
Q5.How many right angles does this shape have?
How many right angles does this shape have?
Q6.Which statements are correct?
Which statements are correct?
All triangles have no right angles.
All quadrilaterals have at least one right angle.
Assessment exit quiz
6 Questions
Q1.How many of each angle does this shape have? Match the number to the type of angle.
How many of each angle does this shape have? Match the number to the type of angle.
Q2.How many right angles are equal to one full turn?
How many right angles are equal to one full turn?
Q3.Look at this shape. How many right angles does it have?
Look at this shape. How many right angles does it have?
Q4.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?
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?
b
c
d
Q5.Aisha joins four squares together around the point. What shape will the four squares make?
Aisha joins four squares together around the point. What shape will the four squares make?
Q6.Aisha joins four of these triangles together using right angles around the point. What shape will the four triangles make?
Aisha joins four of these triangles together using right angles around the point. What shape will the four triangles make?
