Answer :

Given: value of ∠ x and ∠ y

To find: line l ∥ line m

∠ y = 180-50 ° (linear pair angle) means that linear pair is a pair of adjacent, supplementary angle. Adjacent means next to each other, and supplementary means that measures of the two angles add up to equal 180 °.)

∠ y = 130 °

Transversal line making same angle to both line.

So, that line L ∥ line M.

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