SOLUTION: In a parallelogram abcd .angle A is x+50 and angle B is 2x-20.what is angle b?

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Question 1038225: In a parallelogram abcd .angle A is x+50 and angle B is 2x-20.what is angle b?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming these are interior angles, and they are opposite angles, then:
2(x+50)+2(2x-20)=360
2x+100+4x-40=360
6x=300
x=50
2x-20=80 degrees for angle B!!!!!!!!!!!!!