Circle theorems - Higher - OCR

1

Which circle theorem rule is used to find angle a?

Angle at centre of circle = a and angle at circumference = 55degrees

2

What is the size of angle a?

Angle at centre of circle = a and angle at circumference = 60degrees

3

Which circle theorem rule is used to find angle x?

Angles at circumference = 38degrees and x

4

What is the size of angle x?

Angles at circumference = 38degrees and x

5

Which circle theorem rule is used to find angle y?

Circle with tangent

6

What is the size of angle y?

7

Which circle theorem rule is used to find angle m?

Circle containing triangle with internal angle m and external angle 70degrees

8

Find the size of angle m.

9

What is the size of angle x?

Circle containing triangles with multiple angles, x, y, 72degrees and 32 degrees

10

What is the size of angle y?