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Angle facts are fundamental to geometry and regularly appear across all papers. Students must apply rules about angles on straight lines, at points, in triangles, in parallel lines and in polygons to find missing angles with clear reasoning.
Our tutors see these errors again and again. Knowing them in advance gives you a head start.
Confusing alternate and corresponding angles in parallel line diagrams
Forgetting to state the geometric reason alongside the calculation
Using the wrong formula for interior angles of polygons (should be (n-2) x 180)
This topic is tested by the following exam boards. Our tutors are specialists in each one.
Pythagoras' theorem relates the three sides of a right-angled triangle and is one of the most practical geometry topics at GCSE. It is used in 2D and 3D problems, coordinate geometry, and combined with trigonometry at higher tier.
Geometry & MeasuresTrigonometry uses sine, cosine and tangent ratios to find missing sides and angles in right-angled triangles. Higher-tier students extend this to non-right-angled triangles using the sine rule, cosine rule, and area formula.
Geometry & MeasuresCircle theorems are a higher-tier geometry topic that often carries significant marks. Students must identify and apply theorems about angles in circles, tangents, chords and cyclic quadrilaterals, always giving geometric reasons.
Everything you need to know about revising for GCSE Maths in 2026. From building a revision schedule to mastering every topic area, this comprehensive guide covers exam structure, study strategies, and expert tips to maximise your grade.
Study TipsA detailed breakdown of the 10 most challenging GCSE Maths topics on the Higher tier. For each topic, understand why it is difficult, the most common mistakes, and practical strategies to master it.
Online LearningDiscover online maths games that make learning advanced concepts fun and accessible. From algebra puzzles to geometry challenges, these games build real skills without students even realising it.
Take our free diagnostic quiz to find out exactly where you stand, then get matched with a tutor who specialises in geometry & measures.