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

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

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