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Question
Write the supplement of an angle of measure 2y°.
Solution
Let the required angle measures x°
It is given that two angles measuring x° and 2y°are supplementary. Therefore, their sum must be equal to 180°.
Or, we can say that:
x + 2y = 180
x = 180 - 2y
Hence, the required angle measures (180 - 2y)°.
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