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Sec. 4-4 Using and CPCTC

3 parts can prove ?s are ?. . SSSSASASAAAS. . . Now lets make conclusions about their other parts.. CPCTC ? Corresponding Parts of ? ?s are ?. Proof:. Given: SL ? SR ?1 ? ?2Prove: ?3 ? ?4. . . . . . C. S. L. R. 1. 2. 3. 4. Statements1) SL ? SR2) ?1 ? ?23) CS ? CS4) ?SLC ? ?SRC5) ?3 ? ?4.

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Sec. 4-4 Using and CPCTC

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    1. Sec. 4-4 Using ? ? and CPCTC Objective: 1) To use ? congruence and CPCTC to prove that parts of 2?s are congruent.

    3. Proof: Given: SL ? SR ?1 ? ?2 Prove: ?3 ? ?4

    4. Proof: Given: ?DEG is Right ?DEF is Right ?EDG ? ?EDF Prove: FE ? EG

    5. What have you learned?? What does CPCTC stand for? Corresponding parts of congruent triangles are congruent. What must you prove before you use CPCTC? Congruent triangles

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