Circles+ circle theorems

Question 1

The angle in a semicircle

Answer 1

Is a right angle

Question 2

The angle at the centre is

Answer 2

Twice the angle at the circumference

Question 3

Angles in the same segment are

Answer 3

Equal

Question 4

Cyclic quadrilateral

Answer 4

A quadrilateral with all four corners touching the circle’s circumference, opposite angles add up to 180

Question 5

A tangent is

Answer 5

Perpendicular to a radius

Question 6

Angles in alternate segments

Answer 6

Are equal

Question 7

A chord is bisected by

Answer 7

A perpendicular radius

Question 8

What is the name for the line from the centre to the circumference of a circle

Answer 8

Radius

Question 9

What bisects a chord

Answer 9

A perpendicular radius

Question 10

What is the name for the line that splits a circle in half

Answer 10

Diameter

Question 11

What is the name for the part inbetween two radii

Answer 11

Sector

Question 12

What is the name for the smaller part inbetween a chord and the circumference

Answer 12

Minor segment

Question 13

What is the name for the bigger part inbetween a chord and the circumference

Answer 13

Major segment

Question 14

What is the circumference split into by a chord

Answer 14

Major and minor arcs

Question 15

What is the name of the line that touches the circumference at only one point

Answer 15

Tangent