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Lesson 9 of 10
  • 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 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.

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Lesson details

Key learning points

  1. Where four right angles meet, there is a full turn and no gaps between the shapes.
  2. Joining four right angles at a point will always make a full turn.
  3. 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.


To help you plan your year 3 maths lesson on: Join four right angles at a point using different right-angled polygons, download all teaching resources for free and adapt to suit your pupils' needs...

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

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6 Questions

Q1.
Which of these images shows a right angle?

An image in a quiz
Correct answer: a
b
c
Correct answer: d

Q2.
Which of these shapes has at least one right angle?

An image in a quiz
Correct answer: a
b
c
Correct answer: d
Correct answer: e

Q3.
Which of these shapes have angles larger than a right angle?

An image in a quiz
a
Correct answer: b
Correct answer: c
Correct answer: d
e

Q4.
Complete this sentence. All rectangles have right angles.

Correct Answer: 4, Four

Q5.
How many right angles does this shape have?

An image in a quiz
Correct Answer: 4, Four

Q6.
Which statements are correct?

Correct answer: All squares have four right angles.
All triangles have no right angles.
All quadrilaterals have at least one right angle.

Assessment exit quiz

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6 Questions

Q1.
How many of each angle does this shape have? Match the number to the type of angle.

An image in a quiz
Correct Answer:3,angles greater than right angles.

angles greater than right angles.

Correct Answer:1,angle smaller than a right angle.

angle smaller than a right angle.

Correct Answer:0,right angles.

right angles.

Q2.
How many right angles are equal to one full turn?

Correct Answer: 4, Four

Q3.
Look at this shape. How many right angles does it have?

An image in a quiz
Correct Answer: 1, one

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?

An image in a quiz
Correct answer: a
b
c
d

Q5.
Aisha joins four squares together around the point. What shape will the four squares make?

An image in a quiz
Correct Answer: square

Q6.
Aisha joins four of these triangles together using right angles around the point. What shape will the four triangles make?

An image in a quiz
Correct Answer: square