Two angles, ∠1 and ∠2 , in a diagram are supplementary. If m∠1=77°, what equation can you write to solve for m∠2? Let m∠2=x°
Since the two angles are supplementary, they add up to 180 degrees.
The equation to solve for m∠2 can be written as:
m∠1 + m∠2 = 180
Substituting m∠1 = 77° and m∠2 = x°, the equation becomes:
77 + x = 180