An angle is a measure of turn. It shows how far something has rotated.

A degree is a unit of measure for angles.

An arc is part of any curve. They can be used to show the angle between two lines.

Use the unit of degrees as a standard unit to measure angles

Maths

Review understanding and identification of right angles

Review understanding of angles as a measure of turn

Use the terms acute, obtuse and reflex when comparing angles to a right angle

Describe static angles using the standard unit of degrees when compared to a right angle

Describe rotations using the standard unit of degrees when compared to a right angle

Estimate acute and obtuse angles using the standard unit of degrees

Know that the angles in a full turn sum to 360 degrees and use this to solve problems

Know that the angles at a point sum to 360 degrees and use this to solve problems

Angles in quadrilaterals

Know that the angles on a straight line sum to 180 degrees and use this to solve problems

Angles in triangles

Measure the size of angles accurately using a protractor

Draw angles accurately using a protractor

Reasoning about angles in polygons

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.

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

How many degrees are equal to one right angle? {{ }} °

A full turn is equal to four right angles which is ___.

The angle shown is 50° which means it is an {{ }} angle.

The angle shown is 140° which means it is an {{ }} angle.

What is the measurement of the angle shown here? {{ }}°

Which image shows an angle of approximately 30°?

Look at the image. This shape has {{ }} right angle(s).

This shape has one pair of parallel sides. True or false?

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

Look at the hands on this clock face and the arrow. The angle formed is __________.

This is a trapezium. Look carefully at the vertices and the angles inside the shape. Complete the sentence. There are {{ }} obtuse angles in the trapezium.

Use the unit of degrees as a standard unit to measure angles

Lesson outcome