Secant and Tangent Lines in a Circle

Lines AO and BO are tangent. What is the measure of BO?

• 20

• 15

• 10

• 5

find the measure of x

• 38

• 21

• 27

• 96

Find the measure of angle BDC.

• 35

• 40

• 75

• 110

Find the measure of angle EFH.

• 61

• 65

• 114

• 130

Two tangents of a circle that meet outside of the circle at one point are _________.

• congruent

• perpendicular

• the same

A tangent is a line that touches a circle at just one point and forms a right angle with the circle's radius.

• True

• False

In the diagram, a tangent and a line drawn to the point of tangency form a right triangle. Solve for "?" (the length of the hypotenuse)

• 15

• 6

• -24

• 14

find the measure of y

• 30

• 60

• 90

• 180

What can you conclude from the picture?

• m is parallel to circle C

• m is skew to circle C

• m bisects circle C

• m is tangent to circle C

What can you conclude?

• AB and AC are not congruent.

• AB= half of AC

• AC = half of AB

• AB=AC