Question

If ZABC measures 90°, what is the measure of Ac?O A. 180°90°O B. 45°АBO C. 270°O D. 90°D

Answer 1

We have to use the central angle theorem, which states that an arc and its central angle are congruent.

$\begin{gathered} AC=m\angle ABC \\ AC=90 \end{gathered}$

Hence, the answer is D. 90°.