Question

if a radius of a circle is perpendicular to a chord, then it ______ that chord.
a. parallels
b. is congruent to
c. bisects
d. is equal in length to

Explanation:

This is a fundamental circle theorem: when a radius of a circle is perpendicular to a chord, it divides the chord into two equal parts, meaning it bisects the chord. The other options are incorrect: a radius perpendicular to a chord cannot be parallel to it; congruence and equal length do not apply here as a radius is a line segment from center to circumference, while a chord connects two points on the circumference.

Answer:

C. bisects