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

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Published on October 31, 2008

Author: davehohman

Source: slideshare.net

4-2 some ways to prove triangles congruent

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????

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????

SSS SSS Postulate If 3 sides of one ∆ are congruent to 3 sides of another ∆ then the ∆’s are congruent (Volunteer needed for demonstration)

SSS Postulate

If 3 sides of one ∆ are congruent to 3 sides of another ∆ then the ∆’s are congruent

(Volunteer needed for demonstration)

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.

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.

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.

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.

Tricks to remember

STATEMENT REASON

Homework Page 124 #2-18 even

Page 124 #2-18 even

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