Geometry and TrigonometryEasyRemaining angle in a right triangle named by vertices
Geometry and Trigonometry practice question
In triangle ABC, angle C is a right angle and angle A measures 35°. What is the measure, in degrees, of angle B?
Answer: 55
The angles sum to 180: 180 − 90 − 35 = 55.
Common wrong answers
- If you answered 35
- 35 would make angles A and B equal, but then they would not sum to 90.
- If you answered 90
- 90 is angle C.
- If you answered 145
- 145 is 180 − 35, forgetting the right angle at C.
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