Angles in Triangles and on Parallel Lines (2)

In this worksheet, students use angle rules to work out the missing angles in triangles and parallel lines.

This content is premium and exclusive to EdPlace subscribers. Sign up now.

Key stage: KS 2

Year: Year 5 11+ worksheets

Curriculum topic: Maths and Numerical Reasoning

Curriculum subtopic: 2D Shapes: Circles, Angles and Bearings

Difficulty level:

Worksheet Overview

Look at the following diagram.

Angle a° = 58° because it is alternate to the 58° on parallel lines (Z or S shape)

Angle b° = 48° because it is alternate to the 48° on parallel lines (Z or S shape)

Angle c° = 180° - 48° - 58° = 74° for two reasons.....angles in a triangle add up to 180° and angles on a straight line add up to 180°

Angle d° = 180° - 58° = 122° because angles on a straight line add up to 180°

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started