The measures of two angles of a triangle are given below. Find the measure of the third angle of the triangle in decimal form. 2
0.9°, 57.4°
1 answer:
The three angles of a triangle equal 180 degrees:
the first two angle are 20.9 and 57.4 which when added together equal: 20.9 + 57.4 = 78.3 degrees
to find the 3rd angle subtract that total from 180:
180 - 78.3 = 101.7
the 3rd angle is 101.7 degrees
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