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°(1 point)
Responses
x°+77°=90°
x°+77°=180°
x°=90°−77°
x°=77°
Responses
x°+77°=90°
x°+77°=180°
x°=90°−77°
x°=77°