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Today's question of the day is from the geometry category. Click on an answer choice and then click on 'submit answer' to see if you got it right!

Two parallel lines x and y are intersected by line z. The upper right angle formed at the intersection of x and z is 70 degrees. The lower right angle formed by y and z is k degrees.

In the figure above, line z intersects lines x and y, and lines x and y are parallel. What is the value of k?

  Answer A   20
Answer B 30
Answer C 70
Answer D 110
Answer E 130

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