One of the tables shows a proportional relationship. Graph the line representing the proportional relationship from this table. pls help

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?

See attachment below and find the equivalent of tan(∠qsr)

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x