Worksheets - calculating missing angles in triangles.

Worksheets - calculating missing angles on a straight line.

Worksheets - calculating missing angles in quadrilaterals.

Worksheet using the trigonometry ratio to calculate missing angles. This links to a product in teacherspayteachers.com.

Practice estimating angles with this fun geometry game from mathplayground. It’s not as easy as it looks.

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A sample of worksheets covering different angle rules. This links to a resource at TES.

Mathematical Team Races

Angle Properties. Maths Educational Wall Chart

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Pass Your GCSE Maths: Angles and Triangles.

Worksheet using the trigonometry ratio to calculate missing angles. (.pdf)

Worksheet using Pythagoras’ formula to calculate the value of missing lengths of right-angled triangles.