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Name: ________________________ Intro to Geometry Date: ___________ Mrs. Sykes Do – Now: Given: BD is an angle bisector of <CBA BC ≅ BA Prove: ∆BDC ≅ ∆BDA Proving Triangles Congruent Using ASA A __________________ S_________________ A ______________ Which triangle pair is the only pair that correctly represents ASA? Angle Side Angle – If two angles and the included side of one triangle are congruent to the corresponding two angles and included side of a second triangle, then the triangles must be congruent Questions #1-2: What additional information is needed to prove the triangles are congruent using the provided method and given information? 1.) Given: <REN ≅ <RVN 2.) Given: BC ≅ DC Proof Example: Altitude: is a line that extends from one vertex of a triangle perpendicular to the opposite side. Practice Proofs: 1.) 2.) ****************************************************************************** Ticket To Leave: