alleryAngles that together make up a right angle are known as what?
ASupplementary
BComplementary
CExplementary
DVertical
Answer & Solution
Correct answer: B. Complementary
1. Angle pairs that sum to a right angle (90°) are complementary.
2. Supplementary pairs sum to 180° and explementary pairs sum to 360°.
3. Vertical angles are a different idea: they sit opposite each other.
_Source: Wikipedia, Angle, Combining angle pairs_
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