Lines and Segments in Circles

Name a tangent of the circle.

Is AB tangent to circle C?

• Yes, because triangle ABC is a right triangle.

• No, because triangle ABC is not a right triangle.

What can you conlude?

• AB and AC are not congruent.

• AB= half of AC

• AC = half of AB

• AB=AC

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

• Parallel

• Skew

• Perpendicular

• Bisecting

Point B is a point of tangency, Find the radius r of circle C.

• 3.75

• 4

• 4

• 4.5

Points B and D are points of tangency. Find the values of x.

• 3

• 4

• 5

• 6

Assume that all the lines that appear tangent are tangent. Find the perimeter

• 54

• 36

• 48

• 42

What is the definition of a tangent?

• A line that intersects the circle on two points.

• A line that passes through the center of the circle.

• A line segment that passes through the center of the circle.

• A line that intersects the circle on only one point.

What is the value of x?

• 22

• 25

• 15

• 20

Find the length of BC.

• 2

• 3

• 9

• 14