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Published byMadlyn Dorsey Modified over 6 years ago

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**Proving Triangles are Congruent: SSS and SAS Sec 4.3**

GOAL: To prove triangles are congruent by using the SSS and SAS Congruence Postulates

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**SSS Congruence Postulate**

If three sides of one triangle are congruent to three sides of a second triangle, then the two triangles are congruent. B Q P A C R

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**SAS Congruence Postulate**

If two sides and the included angle of one triangle are congruent to two sides and the included angle of a second triangle, then the two triangles are congruent. Included angle – an angle between two sides of a triangle. B Q P A C R

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Examples B A C D E

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Examples Q S P R

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Two – Column Proof D Given: Prove: G A R

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Examples Decide whether enough information is given to prove that the triangles are congruent. If yes, state the congruence postulate you would use and the congruence statement. Q P Q R S L R N T S M P O

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