Cambridge IGCSE Mathematics
4.7Circle theorems I
Circle theorems I in Cambridge IGCSE Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic20 practice questions1 lesson
Overview
Core heading: Circle theorems (angle in a semicircle and tangent–radius only).
Learning objectives
What the syllabus expects you to be able to do.
- 4.7.1Calculate unknown angles using the angle in a semicircle and the right angle between a tangent and a radius, giving reasons.
- 4.7.2Extended: calculate unknown angles using the angle at the centre, angles in the same segment, opposite angles of a cyclic quadrilateral and the alternate segment theorem, giving reasons.
Lessons
- Full access
Angle properties of circles
20 min
Join to read every lesson, or see what Full access includes.
Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Circle theorems I into a strength.
Practise with instant marking, see your mastery grow and get a study plan built around your exam date.