객관식
Classify each angle as acute, right, obtuse, straight, or none of the above.
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10. Geometry
Introduction to Angles
객관식
The measure of an angle is 9° more than that of its supplement. Find the measure of each unknown angle.
Hint: let x be the measure of the supplement & sketch the angles
A
91° and 100°
B
90° and 99°
C
85.5° and 94.5°
D
80° and 89°