If two angles are supplementary, then they are not congruent. Which diagram provides a counterexample for the statement? A) A
B) B
C) C
D) D

a

Step-by-step explanation:

supplmentay angles are either of two angles whose sum is 180°

option b is two right angles (90 degree on both) add them together you get 180.

option c is 60 degrees and 120 degrees add them together to get 180 degrees.

option d is 155 degrees and add 25 degrees you get 180.

so the answer is a, because 30 degrees and add the other 30 degrees together you only get 60

the solution is h=10 because you add 9 to each side of the equation.

step-by-step explanation:

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