Complete the two column proof? Given 1 and 6 are supplementary, prove 1 is parallel to m.

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1 Answer
Nov 21, 2017

Lines L and M make the same angle with the intersecting line .

Explanation:

a1 and a6 are supplementary angles, meaning they add to 180 degrees.
#a1 = 180 - a6#
This means that a5, which is #180-a6# given that the angles are made by a line intersecting another line, IS a1.
#a1 = a5# #(=180-a6)#
This means that lines L and M make the same angle with the intersecting line, meaning they are parallel.