4-2 Some Ways To Prove Triangles Congruent Filled Out

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  • 1. 4-2 some ways to prove triangles congruent
  • 2. Think (Don’t write yet)
    • If all three angles and all three sides of two triangles are congruent then we can conclude that the triangles are congruent.
    • Is there a shortcut we can take????
  • 3. SSS
    • SSS Postulate
      • If 3 sides of one ∆ are congruent to 3 sides of another ∆ then the ∆’s are congruent
    • (Volunteer needed for demonstration)
  • 4. SAS
    • SAS postulate
      • If 2 sides and the included angle of one ∆ are congruent to two sides and the included angle of another ∆ then the triangles are congruent.
  • 5. ASA Postulate
    • If 2 angles and the included side of one ∆ are congruent to two angles and the included side of another ∆ then the triangles are congruent.
  • 6. Tricks to remember
  • 7. STATEMENT REASON
  • 8. Homework
    • Page 124 #2-18 even