1. It is a round-shaped figure that has no corners or edges. *

A. chord
B. circle
C. radius
D. vertex

2. It is a line segment joining two points in a circle. *

A. circle
B. chord
C. radius
D. vertex

3. It is a line segment from the center to a point on the circle. *

A. chord
B. diameter
C. radius
D. segment

4. It is a line segment whose endpoints are in the circle passing through the center point. *

A. chord
B. diameter
C. radius
D. segment

5. If the radius is 20 cm, what is the diameter of the circle? *

A. 10 cm
B. 40 cm
C. 61 cm
D. 84 cm