SOLUTION: True or false? If two angles are congruent, then there supplements are congruent.

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Question 653865: True or false? If two angles are congruent, then there supplements are congruent.
Answer by solver91311(24713) About Me  (Show Source):
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If A and B are supplementary then A + B = 180. Likewise if C and D are supplementary, then C + D = 180. But if A and C are congruent, you can substitute and say that C + B = 180, which is to say that C = 180 - B. Then you can say that 180 - B + D = 180, which is to say D = B. So what do you think? True or False?

John

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