Given isosceles Trapezoid ABCD, find the values of and y. Show all of your work.

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

Assemble the proof by dragging tiles to the statements and reasons column

How do i do this activity, is appreciated