Geometry and TrigonometryEasyAngle in a right triangle from a labelled vertex
Geometry and Trigonometry practice question
In triangle PQR, angle Q is a right angle and angle P measures 58°. What is the measure, in degrees, of angle R?
Answer: 32
The angles total 180: 180 − 90 − 58 = 32.
Common wrong answers
- If you answered 42
- 42 is 100 − 58, a slip in the right angle's 90.
- If you answered 58
- Angle R equals angle P only in a 45°-45°-90° triangle.
- If you answered 122
- 122 is 180 − 58, forgetting to subtract the right angle.
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