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IN the diagram Below AB is parallel to CD what is the value of y ?
picture is below

IN the diagram Below AB is parallel to CD what is the value of y ? picture is below-example-1
User Gundon
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Similar to the other question, because AB is parallel to CD, you know the 72º angle corresponds to the angle on top of y.

Because that angle above y and y together make a straight line (and a straight line measures 180º), you have
72 + y = 180

Solving that for y, you get y = 108º
User Tuxdude
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