PleaseHelp me with this!

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 the solutions for a triangle with a =16, c =12, and b = 63º

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"