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Question
Define supplementary angles.
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Solution
Supplementary Angles: Two angles, the sum of whose measures is180° , are called supplementaryangles.
Thus, angles ∠BAC and ∠DAC are supplementary angles, if
x + y = 180°
Example 1:
Angles of measure 50°and130°are supplementary angles, because
50° +130°=180°
Example 2:
Angles of measure 60°and120°are supplementary angles, because
60° +120° =180°
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