Questions of Circles

A tangent line intersects the circle ...

• in exactly two points

• in exactly one point

• through the center

• with the diameter

Which shows a tangent line?

• 
• 
• 
• 

If a line is tangent to a circle, then it is ________ at the point of contact.

• parallel

• adjacent

• supplementary

• perpendicular

Using the tangent lines, find the value of x.

• 60

• 120

• 30

• 300

The polygon circumscribes the circle. Find the perimeter.

• 78

• 84

• 72

• 86

In th given fig, O is the center of the circle and PQ is the tangent at P Find the value of x to the nearest tenth.

• 11.7

• 10.8

• 13.0

• 14.2

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

• 22

• 28

• 34

• 40

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

• 8

• 9

• 15

• 17

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

• 2

• 3

• 4

• 5

Find the radius r

• 2
• 3
• 4
• 5