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Find Angles in Triangles and on Parallel Lines

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

'Find Angles in Triangles and on Parallel Lines' worksheet

Key stage:  KS 3

Year:  Year 8 Maths worksheets

Curriculum topic:   Geometry and Measures

Curriculum subtopic:   Understand the Relationship Between Parallel Lines and Angles

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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