What is the supplementary angle of 42.5 degrees? Here we will define the supplementary angle of 42.5 degrees, show you how to calculate the supplementary angle of 42.5 degrees, and even illustrate the supplementary angle of 42.5 degrees (42.5°) so you have a solid understanding of what it means.
The supplementary angle of 42.5 degrees, also known as the supplement angle of 42.5 degrees, is the angle that when added to 42.5 results in a sum of 180. Therefore, to calculate the supplement angle of 42.5 degrees, we subtract 42.5 from 180. Here is the formula, the math, and the answer:
180 - angle = supplement angle
180 - 42.5 = 137.5
137.5 degrees
42.5 degrees plus the supplementary angle of 42.5 degrees equals 180 degrees, which means that together they will make a straight line.
The illustration below shows 42.5 degrees colored in red and the supplementary angle of 42.5 degrees, which is 137.5 degrees, colored in green.
As you can see from the illustration above, 42.5 degrees and 137.5 degrees form a straight line together. This proves that the two angles, 42.5 degrees and 137.5 degrees, are supplementary angles.
Supplementary Angle Calculator
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