Tangent Lines to Circle

Line segment AB and AD are both tangent to circle C. Find x.

• 2

• 3

• 4

• 5

Line segment AB is tangent to circle C. What is the radius of the circle?

• 3.75

• 4.25

• 3.25

• 3.5

Line segment AB and line segment AD are both tangent to circle C. What is the value of x?

• 4.5

• 5

• 5.5

• 6

Is line segment AB tangent to the circle?

• Yes

• No

Assume that lines that appear to be tangent are tangent. O is the circle. What is the value of x?

• 90

• 140

• 220

• 360

Assume that lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x?

• 90

• 309

• 129

• 39

Assume that lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x?

• 160

• 20

• 70

• 90

Determine whether a tangent line is shown in the diagram. (Hint: Use the Pythagorean Theorem)

• Yes

• No

Determine whether a tangent line is shown in each diagram. (Use the Pythagorean Theorem)

• Yes

• No

In each circle, what is the value of x to the nearest tenth?

• 4.25

• 14.10

• 3.75

• 6.25