Given: AD bisects BC at E.
AB BC
DC BC
Prove:
There are two triangles ABE and EDC in which BE=EC (given), <abe=<ecd=90°(given) "="" -="" <bea=<dec(vertically="" angle),="" and="" are="" as="" by="" congress="" congruent,="" congruent,="" degree="" each="" for="" in="" is="" it="" m="" matching="" of="" opposite="" so="" side="" so.="" the="" which="">