Testing testing testing this hasn’t worked

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?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c