On the day a certain celebrity proposes marriage, 8 people know about it. Each day afterward, the number
of people who know grows by 50%
Which expression gives the number of people who know about the proposal after 4 days?

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.