I need some help with some of my paragraph proofs.... can you help me??

Lines A and B are parallel. ___ because they form a linear pair
A) Angle 1 is supplementary to angle 2
B) Angle 1 is congruent to angle 3
C) Angle 3 is supplementary to angle 2
D) Angle 2 is congruent to angle 3

1 Answer
Dean R.
Jun 27, 2018

It's hard to answer without the figure showing which angles are which, but when two lines cross (not parallel) the angles on one side of one line form a linear pair, and they're supplementary, adding to #180^\circ.#

Parallel lines with a transverse crossing line also make congruent and supplementary angles.

Related questions
Impact of this question
1045 views around the world
You can reuse this answer
Creative Commons License