The diameter of a penny is about 7.9 x 10+km. it would take about 21 x 10 pennies
placed end to end to circle the equator once. what is the approximate length of the
equator?
graph the exponential function y = 7* 2*,

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.