Answer:

b.

Step-by-step explanation:

not sure but hope it helps

21.) A line that is curved so that it ends meet and every point on the line is the same distance from the center.

A.Diameter

B.Radius

C.Circle

D.Sphere

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C. Circle

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A circle consists of a closed curved line around a central point. Every point on the line is the same distance from the central point. This distance to the center is called the radius. The outer line that encloses the circle (or the length of this line) is called the circumference.

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