Lines of Circles

If a line is tangent to a circle, then it is ________ to the radius drawn to the point of tangency.

• parallel

• adjacent

• supplementary

• perpendicular

A point B is 17cm away from the centre O of a circle. AB is the tangent to the circle at A. Given that AB = 15 cm, find the radius of the circle.

• 8 cm

• 9 cm

• 2 cm

• 16 cm

Determine if a tangent line is shown in the picture.

• Yes

• No

• Not sure

Determine if a tangent line is shown in the picture.

• Yes

• No

• Note Sure

What is the value of x?

• 22

• 25

• 15

• 20

Find the value of X

• 3

• 16

• 8

• 12

Find the length of LK

• 24

• 20.25

• 17.5

• 12.32

Find the value of X

• 8.5

• 3.6

• 7.2

• 9.2

Using lines tangent to the circle, find the value of x.

• 57

• 137

• 47

• 257

A tangent line intersects a circle at exactly how many points?

• One

• Two

• Three

• Zero