Kenneth S. answered • 12/11/16

Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018

The figure is one triangle with base AC, and vertex B above, and another triangle using the same base with vertex D below.

AB is congruent to CD given

BC is congruent to AD given

AC = AC reflexive property of equality

Triangle ABC is congruent to triangle CDA SSS method of congruence

Q.E.D.