Circles Review 10.1-10.3

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 ________ to the radius drawn to the point of tangency.

• parallel

• adjacent

• supplementary

• perpendicular

Using the tangent lines, find the value of x.

• 60

• 120

• 30

• 300

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

• 57

• 137

• 47

• 257

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

• Not Sture

Determine if a tangent line is shown in the picture.

• Yes

• No

• Note Sure

The polygon circumscribes the circle. Find the perimeter.

• 78

• 84

• 72

• 86

What is the length of the blue arc?

• 45⁰
• 3.9 mi
• 5.9 mi
• 7.9 mi