The number of a countrys unemployed workers decreased from 3.2 million to 2.5 million last year. if the country's population remained constant at 74 million, how did its unemployment rate change last year? also if you can write how you got that answer.

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.