13. given: ab//dc, prove: triangle abe is congruent to triangle dce ! i am so far behind on my work right now i will give the brainliest answer the pic should be able to be seen

2.Alternate Interior angles theorem.
They given angles are alternate and interior when compared to each other, so they are congruent.  
3 Vertical angles theorem.
The two angles are vertical angles and are not congruent. 
4 Angle-Angle Similarity Postulate. 
Because there are two corresponding angles that are congruent they are similar triangles by the angle-anlge similarity postulate.