. According to the Population Reference Bureau (www. prb. org), Russia's annual growth rate during the next 15 years is projected to be -0.05%. If the population of Russia in mid-2010 is approximately 141,900,000 people, use the projected growth rate to estimate the population in mid-2025.​

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.