Use a paragraph proof to prove the alternate interior angles theorem.

Given: line AB is parallel to line CD

Prove: Alternate interior angles are congruent

Question

Use a paragraph proof to prove the alternate interior angles theorem.

Given: line AB is parallel to line CD  

Prove: Alternate interior angles are congruent

anonymous · Answer

attachment

cwrw238 · Answer

angle 2 = angle 6  (corresponding angles AB is parallel CD)
also angle 2 = angle 4 ( opposite angles)
therefore alternate angles 4 and 6 are equal

by a similar argument alternate angles 3 and 5 are also equal

cwrw238 · Answer

i'm not sure the descriptions of angles are same as mine ( i'm from uk)

cwrw238 · Answer

eg i think in US opposite angles are vertical angles??