Circle Theorems: Angle at the centre and angle at the circumference

Circle Theorems: Angle at the centre and angle at the circumference

warning

These resources will be removed by end of Summer Term 2025.

Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.

Lesson details

Key learning points

  1. In this lesson, we will learn that the angle at the centre of a circle is twice the angle at the circumference when subtended from the same arc. We will prove this result with a general case.

Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

Loading...

3 Questions

Q1.
Work out the size of angle x.
An image in a quiz
225º
300º
Correct answer: 75º
90º
Q2.
Work out the size of angle x.
An image in a quiz
144º
18º
324º
Correct answer: 72º
Q3.
Work out the size of angle x.
An image in a quiz
112º
124º
Correct answer: 28º
56º

Lesson appears in

UnitMaths / Circle Theorems 1