Question

When are supplementary angles congruent?

Answer 1

The only way to be adjacent and supplementary would be two angles on a straight line:

_/_

The two angles on top are adjacent and supplementary. Therefore, they could be congruent if the the line in between them was perpendicular to the straight line, and so each angle was 90º ... otherwise, they wouldn't be congruent

Answer 2

thank u that helps

Answer 3

no problem.

Answer 4

Supplementary angles are congruent if and only if they are both equal to 90 degrees. This is because 2x = 180 (x being your angle) divide by two on both sides to get x = 90. Hope this helps!