Enter the equation of the line in the form y = mx where m is the slope.

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?

1. what is the measure of ∠abc? what is the measure of ∠abd?

How do i do this? i don’t understand