A bag contains:
• 5 red marbles. 6 blue marbles 3 green marbles. 4 black
marbles. 2 yellow marbles
A marble will be drawn from the bag and replaced 200 times.

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.