SOLUTION: If ∠A is a supplement of ∠B and is a right angle, then what is m∠B in degrees?

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Question 794113: If ∠A is a supplement of ∠B and is a right angle,
then what is m∠B in degrees?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
B=90 degrees