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Complementary is which add up to 90 °
8)
59+31=90° complementary angles.
supplementary is which add up to 180°
10) 156+24=18 supplementary angles
12)
shows right angle=3x+45=90
3x=45
x=15°

14) supplementary angles
2x+3x+25=180
5x+25=180
x=31°

16) again it makes supplementary angles
x+2x+21=180
3x+21=180
x+7=60
x=53°

I hope this information helps!

Remember that a straight line has an angle measure of 180.

Two angles whose sum equals 180 are supplementary angles.

Two angles whose sum equals 90 are complementary angles.

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