Geometry - Proving Two Triangles are Congruent Using SAS

The video tutorial explains how to write a two-column proof to prove a theorem. It begins with an introduction to the concept of a two-column proof, followed by an explanation of midpoints and their properties. The teacher demonstrates how to apply the definition of a midpoint in proofs and discusses the use of side-angle-side as a method for proving congruence. The tutorial concludes with the application of vertical angles to complete the proof, emphasizing the importance of understanding these concepts in geometry.

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