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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.

'Angles in Triangles and on Parallel Lines (2)' worksheet

Key stage:  KS 2

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°

 

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