# Chapter 6 - Section 6.1 - Circles and Related Segments and Angles - Exercises - Page 285: 9d

$m\angle AOC=135^{\circ}$

#### Work Step by Step

The measure of a central angle is equal to the measure of its intercepted arc. Since the measure of minor arc $AC=135^{\circ}$, then the $m\angle AOC=135^{\circ}$.

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