(Please help!) Suppose the measure of ∠B is 89°. Which other angles must measure 89°? How do you know?

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

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.