3 years ago

Angle A and angle B are supplementary angles, if angle B equals 73°, what is the measurement of angle A?

2 answers:

7 0

Supplementary means adds to 180
A+B=180
B=73
A+73=180
minus 73 both sides
A+73-73=180-73
A+0=107
A=107

A=107 degrees

3 0

Supplementary angles equal to 180 degrees.

So you can set up an equation and have x be the measure of Angle A.

73 + x = 180

Solve for x.
x = 107

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