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Geometry - GCSE Maths Definition

Reviewed by: Mark Curtis

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What is geometry?

Geometry is the part of GCSE Maths that involves constructing, measuring and investigating lines, angles and shapes. Geometry can be split into a range of smaller topics that include angles, lines, shapes, lengths, areas, volumes, symmetry, transformations, trigonometry and vectors.

Pentagon diagram with interior angles a, b, c, d, e, f and exterior angles p, q, r, s, t, u. Lines extend from each vertex. Save My Exams logo.
A hexagon (six-sided shape) with different angles shown

In geometry, there are lots of facts about different shapes to learn, called geometric properties. An example of a geometric property is the fact that all interior angles in a triangle add up to 180°. There are also formulas for lengths, areas and volumes which you may need to use (some of which are given to you in the exam).

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Mark Curtis

Reviewer: Mark Curtis

Expertise: Maths Content Creator

Mark graduated twice from the University of Oxford: once in 2009 with a First in Mathematics, then again in 2013 with a PhD (DPhil) in Mathematics. He has had nine successful years as a secondary school teacher, specialising in A-Level Further Maths and running extension classes for Oxbridge Maths applicants. Alongside his teaching, he has written five internal textbooks, introduced new spiralling school curriculums and trained other Maths teachers through outreach programmes.

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