Question

what is the measure of $overparen{ar}$ in $odot o$ below? a. $142^{circ}$ b. $218^{circ}$ c. $38^{circ}$ d. $322^{circ}$

Explanation:

Step1: Recall arc - central angle relationship

The measure of an arc is equal to the measure of its central angle.

Step2: Identify the central angle

The central angle corresponding to arc $\widehat{AR}$ is $\angle AOR = 142^{\circ}$.

Answer:

A. $142^{\circ}$