SOLUTION: How do you find angles A, B, and C for a parallelogram when we know that angel D is 68 degrees?

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Question 217094: How do you find angles A, B, and C for a parallelogram when we know that angel D is 68 degrees?
Answer by rfer(12654) About Me  (Show Source):
You can put this solution on YOUR website!
angle D = 68 degrees
angles D & B are congruent, so angle B also = 68 degrees
angles A & C are supplement angels of D & B, so they are congruent.
4 angles = 360 degrees
360-68+68/2=112 derees
angles A & C each = 112 degrees