Answer:
Yes
Step-by-step explanation:
One of the ways you can prove if a parallelogram is a parallelogram is if the sides in the shape are congruent and that's exactly what this proof is showing
Hope this image helps
The answer to this question is D
4. Option 3, a has length of infinity and mn does not split a, a splits mn
5. Option 2, only 1 possibility, since it has to split mn into equal parts
I think its C but I could be wrong.
I hope this helps :)