2- count package of d batteries for $6.59

4 - count package of d batteries for $10.22

which package of batteries is a better buy?

a) the packages are an equal buy.

b) 2- count package of d batteries for $6.59

c) 4- count package of d batteries for $10.22

d) there is not enough information since the tax rate is not given.

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.