# Practise Sorting Angles into Acute or Obtuse

In this worksheet, students will sort angles into acute or obtuse.

Key stage:  KS 2

Curriculum topic:   Geometry: Properties of Shapes

Curriculum subtopic:   Identify Acute/Obtuse Angles

Difficulty level:

#### Worksheet Overview

In this activity, we will practise spotting acute and obtuse angles.

Acute angles are less than 90° and are the smallest type of angle - (that's why they are 'a cute' type of angle!)

Obtuse angles are a bit bigger - more than 90°, but less than 180°.

Let's try an example question.

Example

Sort these angles into acute and obtuse.

(a)  (b)  (c)

(d)  (e)  (f)

Acute angles: c, d, e.

These are less than 90° (a right angle).

Obtuse angles: a, b, f.

These are more than 90° (a right angle) but less than 180° (a straight line).

Are you ready to have a go at sorting some angles out?

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