Geometry and TrigonometryEasy–MediumThird angle of a right triangle from one acute angle
Geometry and Trigonometry practice question
A right triangle has one angle of 27°. What is the measure, in degrees, of its other acute angle?
Answer: 63
The two acute angles of a right triangle add to 90: 90 − 27 = 63.
Common wrong answers
- If you answered 27
- 27 repeats the given angle.
- If you answered 73
- 73 subtracts from 100.
- If you answered 153
- 153 subtracts from 180.
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- Easy–Medium
A circle has a radius of 6. What is its area? (Use A = πr².) - Easy–Medium
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What is the midpoint of the segment joining the points (2, 3) and (8, 11)? - Easy–Medium
What is the measure, in degrees, of angle B? - Easy–Medium
What is the area, in square centimeters, of the trapezoid?
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