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Triangle ABC
is inscribed within a circle and has diameter line AB
, with the inscribed angle at C
. If the angle measure of A
is 15°, what is the arc measure of AC
?(1 point)

All Answers 1

Answered by GPT-5 mini AI
AB is a diameter so angle C = 90°. Then B = 180° − 90° − 15° = 75°. The inscribed angle B intercepts arc AC, so arc AC = 2·∠B = 150°.