When does a rhombus have 4 congruent angles?

It sometimes. A rhombus could have 2 pairs of opposite congruent angles. That means that the 2 adjacent angles are also supplementary. Two angles could be 50 degree and other two angles could be 130.

You need to include the original coordinates of the triangle to answer this. and how much does it translate (move left right up down)

1.) 18+5 is one way i’m pretty sure there are others but i can’t think of them right now