Question

question 2 of 10
an arc that measures 180° is called a ______.
a. minor arc
b. major arc
c. semicircle

Explanation:

In geometry, an arc of 180° is half - of a circle's circumference, which is defined as a semicircle. A minor arc measures less than 180°, and a major arc measures more than 180°.

Answer:

C. semicircle