Write the equation that represents the picture

I'm confused on this could anyone me and show me what i need to do to solve it.

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.