To get ready for school, Traci spent 1/20th of an hour getting dressed and 1/10th of an
hour doing her hair. What is the total
amount of time she spent getting ready?
Give your answer in simplest form.

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.