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Corresponding Parts of Congruent Triangles are Congruent (CPCTC)

9.3.3.6 Know and apply properties of congruent and similar figures to solve problems and logically justify results. . Corresponding Parts of Congruent Triangles are Congruent (CPCTC). Guiding Question: What can I use congruent triangles for?.

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Corresponding Parts of Congruent Triangles are Congruent (CPCTC)

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  1. 9.3.3.6 Know and apply properties of congruent and similar figures to solve problems and logically justify results. Corresponding Parts of Congruent Triangles are Congruent (CPCTC)

  2. Guiding Question: What can I use congruent triangles for? • Lesson Objective: IWBAT use congruent triangles to prove parts of the triangles are congruent.

  3. Guiding Question: What can I use congruent triangles for? • Corresponding Parts of Congruent Triangles are Congruent (CPCTC) is the reason you use to say 2 parts (sides or angles) are congruent. • What parts are corresponding in these triangles?

  4. Guiding Question: What can I use congruent triangles for? • You can only use CPCTC in a proof AFTER you have proved congruence.

  5. Statements Reasons AC  DF Given C  F Given CB  FE Given ΔABC  ΔDEF SAS AB  DE CPCTC For example: A Prove: AB  DE B C D F E

  6. Using CPCTC Additional Examples

  7. Guiding Question: What can I use congruent triangles for? • Assignment: CPCTC WS! • TEST SOON!

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