Investigate and draw other polygons with right angles | Maths

Starter quiz

Which of these shapes has exactly one right angle?
- a
- b ✓
- c
- d
Which of these shapes has exactly two right angles?
- a
- b
- c
- d ✓
Which of these shapes does not have any right angles?
- 'a' ✓
How many right angles does this shape have?
- '4' ✓
Which of these shapes are not quadrilaterals?
- a
- b ✓
- c
- d ✓
Which statement is correct?
- All squares are rectangles. ✓
- All rectangles are squares.
- Rectangles and squares are different because rectangles do not have right angles

Exit quiz

Which shape is a pentagon?
- 'b' ✓
Which shape is a hexagon?
- 'c' ✓
Look at this pentagon. How many right angles does it have?
- '2' ✓
Look at this hexagon. How many right angles does it have?
- '0' ✓
Aisha uses six sticks of equal length to make the shape below. She says, ‘I’ve made a hexagon with four right angles.’ Is she correct?
- No, the shape is not a hexagon. ✓
- Yes, the shape is a hexagon with four right angles.
- No, the shape is a hexagon, but it doesn’t have four right angles.
Laura chooses three of these shapes. The shapes have a total of five right angles. Which three shapes did she choose?
- a ✓
- b ✓
- c
- d ✓

Worksheet

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Presentation

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Lesson Details

Key learning points

Polygons with more than four sides can contain a right angle.
Polygons with more than four sides can contain more than one right angle.
Shapes can be drawn to match a description including angles and numbers of sides.

Common misconception

Pupils may find it hard to recognise right angles presented in unusual orientations.

Encourage pupils to continue to check angles with a right angle measurer. Teach them to recognise where vertices are clearly not right angles and differentiate these from ones that could be right angles.

Keywords

Pentagon - A 2D shape made up of five straight sides and vertices.
Hexagon - A 2D shape made up of six straight sides and vertices.