180 - 58 = 122
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180 - 58 = 122 degrees
135 degree
i dont no
if you know the measure of the angle then all you do is subtract that measure from 180 or 360 or 540, it depends on what your shape is. (e.g. you have a triangle (180) and you're trying to find the supplement of the angle 60 then you do, 180-60=120) :) hope that helps!
It is 180 -64 = 116 and 64 plus 116 = a supplementary angle of 180 degrees