Question #N869
In triangle $ABC$, angle $C$ is a right angle, and $AC = BC$. What is the measure of angle $A$?
A. 30°
B. 45°
C. 60°
D. 90°
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Correct Answer is: B
Since $AC=BC$, triangle $ABC$ is a 45-45-90 triangle. Therefore, the measure of angle $A$ is 45°.