What is the supplementary angle of 109.2 degrees? Here we will define the supplementary angle of 109.2 degrees, show you how to calculate the supplementary angle of 109.2 degrees, and even illustrate the supplementary angle of 109.2 degrees (109.2°) so you have a solid understanding of what it means.
The supplementary angle of 109.2 degrees, also known as the supplement angle of 109.2 degrees, is the angle that when added to 109.2 results in a sum of 180. Therefore, to calculate the supplement angle of 109.2 degrees, we subtract 109.2 from 180. Here is the formula, the math, and the answer:
180 - angle = supplement angle
180 - 109.2 = 70.8
70.8 degrees
109.2 degrees plus the supplementary angle of 109.2 degrees equals 180 degrees, which means that together they will make a straight line.
The illustration below shows 109.2 degrees colored in red and the supplementary angle of 109.2 degrees, which is 70.8 degrees, colored in green.
As you can see from the illustration above, 109.2 degrees and 70.8 degrees form a straight line together. This proves that the two angles, 109.2 degrees and 70.8 degrees, are supplementary angles.
Supplementary Angle Calculator
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