PLEASE HELP!! BRAINLIEST ANSWER AND FASTEST ANSWER GETS TON OF FREE POINTS...MATH WHIZZES, HELP ME OUT. FORGOT HOW TO DO THIS.

Quadrilateral ABCD ​ is inscribed in this circle.



What is the measure of angle C?

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PLEASE HELP BRAINLIEST ANSWER AND FASTEST ANSWER GETS TON OF FREE POINTSMATH WHIZZES HELP ME OUT FORGOT HOW TO DO THIS Quadrilateral ABCD is inscribed in this class=