Question

What is the measure of angle C?

D
55°
A
70°
C
O A 90°
O
B.
60°
C. 45°
D. 30°

Answer 1

90°

Explanation:

Angle C is an inscribed angle off the diameter. All angles like this, that create a triangle with the diameter, are equal to 90°.

Answer 2

∠C=90°

Explanation:

∠C=1/2(BA)

∠C= 1/2 (180)

∠C=90°

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