Mr. anderson is building a triangular- shaped roof for his shed. the triangle must be isosceles with its base (noncongruent) side measuring 14 feet. the length of one of the congruent legs mist be greater than what value?

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.