Circles Assessment

Determine if a tangent line is shown in the picture.

• Yes

• No

• Not sure

Tell whether AB is tangent to ⊙C (with radius 20 units) or not?

• Yes

• NO

In image 19-22 Tell whether the red arcs are congruent. Explain why or why not.

In the diagram, QR = ST = 16, CU = 2x, and CV = 5x − 9. Find the radius of ⊙C

The distance from the center of the circle to any point on the circle is called the...

• radius

• diameter

• circumference

• area

A line segment connecting any two points on a circle is called a _____________. 

• diameter

• chord

• radius

• circumference 

A chord that passes through the center of the circle is called the...

• Radius

• Diameter

• Arc

• circumference

Find the radius of a circle who's diameter is 40 ft.

• 40ft

• 80ft

• 20ft

• 45ft

What is the area of this circle?

• 452.39 cm²

• 139.12 cm²

• 113.1 cm²

• 84.23 cm²

Find the measure of arc AB.

• 17 degrees

• 34 degrees

• 68 degrees

• 146 degrees