Cookies are on sale! today each cookie costs \$0.75$0.75dollar sign, 0, point, 75 less than the normal price. right now if you buy 777 of them it will only cost you \$2.80$2.80dollar sign, 2, point, 80!
write an equation to determine the normal price of each cookie (c)(c)left parenthesis, c, right parenthesis.

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.