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Solve Mixed Angle Problems

In this worksheet, students will use angle rules learnt previously to solve mixed angle problems

'Solve Mixed Angle Problems' worksheet

Key stage:  KS 3

Year:  Year 7 Maths worksheets

Curriculum topic:   Geometry and Measures

Curriculum subtopic:   Apply the Properties of Angles

Difficulty level:  

Worksheet Overview

In this activity, we will calculate missing angles using different angle rules.

Let's recap the rules first!


girl thinking


Recap - Make a note of these!


Angles at a point = 360o

Angles on a straight line = 180o

Angles in a triangle = 180o

Angles on parallel lines - Z shape-  angles are equal -  alternate angles

Angles on parallel lines - F shape-  angles are equal -  corresponding angles

Angles on parallel lines - C shape-  angles add up to 180o -  co-interior angles


One more!


Vertically opposite angles:

This is when two lines form a cross X

The opposite angles are equal


opposite angle rule


You can see from the diagram that if A was 60the opposite A would be 60o too.

Likewise, if B is 120o the other B is too.


Also, A and B form a straight line. (you can see below)



So, if A = 60o

B = 180 - 60 =120o


Have you made some notes? 


You can look back at these rules at any point by clicking on the red help button on the screen.


Are you ready to test yourself on all your angle rules?!!


happy girl dancing

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