GlossariesGCSE GlossariesGCSE Maths GlossaryRight angle

Right angle - GCSE Maths Definition

Reviewed by: Dan Finlay

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A right-angle is an angle measuring exactly 90°. The interior angles of squares and rectangles are right-angles.

In GCSE Mathematics, right-angles can help us to identify properties of shapes and solve problems in geometry. Identifying right-angles is helpful in solving trigonometry problems - identifying a right-angled triangle opens up the world of SOHCAHTOA and Pythagoras' theorem which are used in finding unknown lengths and angles in right-angled triangles.

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Dan Finlay

Reviewer: Dan Finlay

Expertise: Maths Subject Lead

Dan graduated from the University of Oxford with a First class degree in mathematics. As well as teaching maths for over 8 years, Dan has marked a range of exams for Edexcel, tutored students and taught A Level Accounting. Dan has a keen interest in statistics and probability and their real-life applications.

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