(i'm confused. everyone says it's 20, but if abcd∼efgh, and bc=15, shouldn't fg also be 15? answer quickly! 20 points! )
abcd∼efgh

ad=45 in. , eh=60 in. , and bc=15 in.

what is fg ?

enter your answer in the box.
fg = __ in.

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.