The Essential Angle Facts
Part of Angle Facts · GCSE GCSE Mathematics revision
This key facts covers The Essential Angle Facts within Angle Facts for GCSE Mathematics. Revise Angle Facts in Geometry & Measures for GCSE Mathematics with 14 exam-style questions and 12 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 2 of 5 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 5
Practice
14 questions
Recall
12 flashcards
The Essential Angle Facts
| Angles on a straight line | Add up to 180° |
| Angles at a point | Add up to 360° |
| Vertically opposite angles | Are EQUAL |
| Right angle | Exactly 90° |
| Acute angle | Less than 90° |
| Obtuse angle | Between 90° and 180° |
| Reflex angle | Between 180° and 360° |
Keep building this topic
Read this section alongside the surrounding pages in Angle Facts. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Angle Facts
An angle measures 135°. What type of angle is this?
Two angles on a straight line are 73° and 107°. A student says: 'These two angles must be equal because they are on a straight line.' Is the student correct? Give a reason for your answer.
Quick Recall Flashcards
14 questions on Angle Facts — practise free
Instant marking, adaptive difficulty, and 12 spaced repetition flashcards. Free until your GCSEs.
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