(2x + (-6x^2)) + (-3x+ 5x) + (5 +(-2))
simplify

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?

Which shows the pre image of triangle xyz

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?