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QveST [7]
3 years ago
7

10 Points Here come get them

Mathematics
2 answers:
Ugo [173]3 years ago
8 0
The answer is option D. (15°)

Two angles are said to be supplementary when both angles together make a straight line. Since the measure of a straight line is 180°, it then follows that the sum of two supplementary angle is 180°

Let the unknown angle = x
x is supplementary to 165°
⇒ x + 165° = 180°
x = 180° - 165°
x = 15°
RoseWind [281]3 years ago
5 0
The answer to this is d. 15. 

Supplementary angles are two angles that equal to 180. So you take the known angle (165) and subtract it from 180 to find the other angle measure.

180-165=15

15 is your answer. 
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