One angle in a triangle is a right angle and one angle is 33°. What is the measure of the third angle?
A) 57°
B) 147°
C) 33°
D) 67°
E) 47°

Question

Quizplus · Accepted Answer

The sum of the angles in a triangle is always 180°. Since one angle is a right angle (90°) and one angle is 33°, the third angle can be found by subtracting the sum of the other two angles from 180°: 180° - 90° - 33° = 57°. Therefore, the answer is A) 57°.

One Angle in a Triangle Is a Right Angle and One