Classify this triangle by its angle

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the

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.