0 and 90
1 and 89
2 and 88
0.5 and 89.5
etc.
Just choose any number for the first angle, and subtract it from 90 to get the second angle.
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The term supplementary angle is used to refer to angles whose sum is 180 degrees. This is different from complementary angles which add up to 90 degrees.
Two angles whos sum equals ninety degrees
The sum of two complementary angles is 90 degrees.
Exterior angles add up to 360 degrees Interior angles add up to 1260 degrees
Exterior angles add up to 360 degrees Interior angles add up to 1080 degrees