Question

Question in comments

Answer 1

A. angles supplementary to the same angle are congruent
B. I two angles form a linear pair, then they are supplementary
C. If The sum of the measures of two angles is 180 degrees then they are supplementary
D. All right angles are congruent

Answer 2

Stems from the definition of supplementary angles. All the angles which lie on one side of a line, when added, add up to 180 degrees. They are a linear pair.

Answer 3

so c?

Answer 4

We are not given that the sum of the measurements of the angles is 180 degrees. We recognize that they are a linear pair and therefore supplementary and therefore 180 degrees. The order of the information is crucial. So the answer is B. The starting point is recognizing that they are a linear pair.

Answer 5

okay, thanks!

Answer 6

It's not a trick question, but a cleverly-disguised question. We deduce that they are supplementary and then realize that supplementary angles add to 180. And you are quite welcome!