Geometry and TrigonometryEasyComplementary angles
Geometry and Trigonometry practice question
Two angles are complementary. One of them measures 37°. What is the measure of the other?
- A. 53°Correct
- B. 143°
- C. 37°
- D. 63°
Answer: A. 53°
Complementary angles add to 90°. The other angle is 90° − 37° = 53°.
Why the other answers are wrong
- B. 143°
- 143° is 180° − 37°. Angles that add to 180° are SUPPLEMENTARY; complementary angles add to 90°.
- C. 37°
- 37° would only be right if the two angles were equal, which would make each 45°.
- D. 63°
- 63° is 100° − 37°. The total for complementary angles is 90°.
More Geometry and Trigonometry questions
- Easy
Two angles of a triangle measure 40° and 75°. What is the measure of the third angle? - Easy
A triangle has a base of 10 and a height of 6. What is its area? - Easy
In a 30°-60°-90° right triangle, the shorter leg (opposite the 30° angle) has length 6. What is the length of … - Easy
A rectangle has a length of 8 and a width of 3. What is its perimeter? - Easy
A closed rectangular box has a length of 5 inches, a width of 4 inches, and a height of 3 inches. What is the … - Easy
In the xy-plane, a circle has center (2, −5) and radius 3. Which equation represents this circle?
Not affiliated with the College Board. SAT is a trademark of the College Board.