A right angle is a quarter of a full turn. It can be known as a ‘square corner’.

Review understanding and identification of right angles

Maths

In this unit pupils will compare the size of angles where there is a clear visual difference and use the terms acute, obtuse and reflex when describing the size of angles or amount of rotation with relation to right angles using a unit called degrees. In the future unit pupils will use knowledge of shape properties to draw, sketch and identify shapes.

In the prior unit pupils completed and composed symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes. In this unit pupils will compare the size of angles where there is a clear visual difference and use the terms acute, obtuse and reflex when describing the size of angles or amount of rotation with relation to right angles using a unit called degrees.

Angles: compare, name, estimate and measure angles

True or false? The shape Jacob made on the pinboard contains exactly two right angles.

Look carefully at the shape Jacob has made on the pinboard. The shape contains {{ }} right angle(s).

What kind of turn is needed here? The distance from where a __________turn starts to where it finishes is a right angle.

Look carefully at the shape Jacob has made. The shape contains {{ }} right angle(s).

Which of these shapes contains one or more right angles?

Which of these shapes have one or more pairs of perpendicular sides?

Complete the sentence. A rectangle has {{ }} vertices.

All shapes with 4 sides and 4 vertices are classified as __________.

This lesson will soon be taken down.

Review understanding and identification of right angles

Lesson outcome