Question

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°=90°−77°

x degrees equals 90 degrees minus 77 degrees

x°+77°=180°

x degrees plus 77 degrees equals 180 degrees

x°=77°

x degrees equals 77 degrees

x°+77°=90°

x degrees plus 77 degrees equals 90 degrees
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Answer 1

x° + 77° = 180°

(So x = 180 − 77 = 103°, if you solve it.)