Mathematics
Grade9
Easy
Question
The measure of angle x is ________.
- 685°
- 31°
- 22°
- 90°
Hint:
perpendicular that's mean 
The correct answer is: 22°
If two sides of two adjacent acute angles are perpendicular, then the angles are complementary.
So, 68° + x = 90°
x = 90° - 68°
x = 22°.
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