Maths Activities - Angles

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Measuring angles
An interactive site which provides a protractor for various measuring angles of a shape. Click the arrow to change the shape.
What's my angle?
Introduction explains and demonstrates how to measure angles with a protractor. Explains acute, obtuse and reflex angles. Provides 10 online activities to support the teaching and investigation of angles.
Types of Angles
Learn about acute and obtuse angles.
Complementary Angles
Provides an explanation and practice exercises in 3 different time trial formats.
Complementary Angles
Concentration game to give practice in matching angles a that are complementary.
Supplementary Angles
Provides an explanation and practice exercises in 3 different time trial formats.
Complementary and Supplementary Angles
Provides practice exercises in distinguishing between complementary and supplementary angles.
Interactive supplementary angles
Explore and discover the rule for vertical angles