Convert 20 quarts to gallons. There are 4 quarts in a gallon. O A. 10 gallons
OB. 5 gallons
O C. 40 gallons
O D. 80 gallons

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.