Question

Two supplementary angles are congruent. Which equation gives the measure in degrees, d, of each angle?

d + 2d = 180


2d = 180


d + d = 90


No equation because supplementary angles cannot be congruent.

Answer 1

Answer:

no equation because supplementary angles cannot be congruent.

Step-by-step explanation:

answer was already in question

Answer 2

Answer:

Step-by-step explanation:

The given statement is :Two supplementary angles are congruent.

Two angles are said to be supplementary if sum of these two angles is 180°.

Let one Angle be A, then another angle will be 180 - A.

As given:

A≅180-A

A=180 -A

A +A= 180

2 A = 180

Dividing both sides by 2, we get

A= 90°

The Measure of each angle will be of 90°.

i.e , d = 90°