Asked by Shon

given ∠ABC is bisected by ray BD. D is interior of angle ∠ABC. m∠ABD=87. what is m∠ABC

Answers

Answered by oobleck
since ABD bisects ABC, it is 1/2 as big
So ABC is 174°

By the way, since BD bisects ABD, you don't have to say that D is interior of angle ∠ABC. Where else could it be?
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