Question

how are the semicircle and the diameter of a circle related?
the length of the diameter and the length of semicircle are the same.
the degree measure of the diameter and the degree measure of the semicircle are the same.
the angle measure of the diameter is twice the angle measure of the semicircle.
the angle measure of the diameter is half the angle measure of the semicircle.

Explanation:

A diameter of a circle divides the circle into two equal - semicircles. The angle subtended by a diameter at the center of a circle is 180 degrees, and the angle measure of a semicircle (the arc of a semicircle) is also 180 degrees in terms of central - angle measure.

Answer:

The degree measure of the diameter and the degree measure of the semicircle are the same.