if a transversal crosses two parallel lines then the alternate interior angles will always sum to 180

Answer 1

False.

Alternate interior angles are two pairs that lie in between the 2 parallel lines (thus, "interior") but lie on opposite sides of the transversal (the line intersecting the 2 parallel lines)(thus, "alternate").

Alternate interior angles are always congruent.

There is a pair that are acute and congruent, and a pair that are obtuse and congruent.

The only time that does not occur is when the transversal is perpendicular to the parallel lines, which would create right angles everywhere. That is also the only instance in which alternate interior angles will also be supplementary (sum to 180 degrees).

Answer 2

is you are making a statement then I must say that this is an interesting one. If a transversal cuts through two parallel lines then many kinds of angle relations will arise. It seems that you are referring to supplementary angles which always add up to 1800 degrees while alternate interior angles are angles that "face each other " the top and bottom parts of a transversal and these angles are always acute. I can't really draw it but I hope that this explanation gives you a good picture f what I am talking about.

Answer 3

is you are making a statement then I must say that this is an interesting one. If a transversal cuts through two parallel lines then many kinds of angle relations will arise. It seems that you are referring to supplementary angles which always add up to 1800 degrees while alternate interior angles are angles that "face each other " the top and bottom parts of a transversal and these angles are always acute. I can't really draw it but I hope that this explanation gives you a good picture f what I am talking about.