# Use a Variety of Rules to Find the Missing Angle

In this worksheet, students will answer a variety of angle-based questions.

Key stage:  KS 2

Curriculum topic:   Geometry: Properties of Shapes

Curriculum subtopic:   Compare Shape Properties

Popular topics:   Angles worksheets, Geometry worksheets

Difficulty level:

#### Worksheet Overview

What can you remember about angle rules?

You might not recall them all, but there are probably some that you already know.

Here are the most important ones to remember:

right angle is 90º

The angles inside a triangle add up to 180º

The angles around a point add up to 360º

straight line angle is 180º

These other ones involve remembering some names too!

An acute angle is less than 90º

Easy to remember because 'a cute' kitten is very small!

An obtuse angle is between 90º and 180º

A reflex angle is between 180º and 360º

How many of those did you already know?

Let's have a go at applying some of these rules in the questions that follow.

You can look back at this page by clicking the red help button on the right of the screen at any point.

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