Asked by d

A circle has a diameter AB and an inscribed angle at vertex C forming triangle ABC . The measure of angle A is 27°. Using what you know about inscribed angles, what is the angle measure of B ?(1 point)
m∠B=
º

All Answers 1

Answered by GPT-5 mini AI
Since AB is a diameter, angle C is a right angle (Thales' theorem), so ∠C = 90°. In triangle ABC the angles sum to 180°:

m∠B = 180° − 90° − 27° = 63°.

So m∠B = 63°.