This material may consist of step-by-step explanations on how to solve a problem or examples of proper writing, including the use of citations, references, bibliographies, and formatting. This material is made available for the sole purpose of studying and learning - misuse is strictly forbidden.Proof: Consider the triangles AMB and CMD. These are congruent because (SAS)
AM and AM are the same in length, BM and DM are the same in length
and at M the angle AMB is equal to the angle CMD....