Question

question 1 of 10 which of the following segments is a radius of ⊙o?

Explanation:

Step1: Recall radius definition

The radius of a circle is a line - segment from the center of the circle to a point on the circle.

Step2: Identify center and points

In circle $\odot O$, the center is point $O$. Points $A$, $S$, $T$, $R$ are on the circle.

Step3: Select correct segment

The segment $\overline{AO}$ is from the center $O$ to a point $A$ on the circle, so it is a radius. Segment $\overline{AS}$ is a chord (a line - segment with both endpoints on the circle), $\overline{ST}$ is also a chord, and $\overline{RA}$ is a chord.

Answer:

B. $\overline{AO}$