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# 4-2 Some Ways To Prove Triangles Congruent Filled Out

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### Transcript

• 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