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Mastering Congruent Triangles Proofs: Warm-Up Geometry Lesson

Learn to prove triangles congruent using postulates in two-column proofs. Practice with examples involving midpoint, vertical angles, ASA, and more. Complete a proof exercise and homework assignments.

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Mastering Congruent Triangles Proofs: Warm-Up Geometry Lesson

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Presentation Transcript

  1. Warm-Up

  2. Geometry Proving Triangles are Congruent

  3. Learning Outcomes! • I will be able to use congruence postulates to write two column proofs for congruent triangles.

  4. Given Alt. interior Given Vertical ASA

  5. Given MO=OQ O is the midpt of NP NO=OP Vertical angles SAS

  6. Given: ∠A ≅∠E and C is midpoint of BD Prove: ∆ABC ≅∆EDC 16. Complete the following proof. BC=CD Vertical angles AAS

  7. Homework • Pg. 216: 20, 22-25 and pg. 224: 19-22, 32-37

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