Wednesday March 13, 4-4, 4-4 CPCTC.

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4-4 Using Congruent Triangles: CPCTC

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Presentation transcript:

Wednesday March 13, 4-4, 4-4 CPCTC

Agenda Warm-Up Homework Check 4-4, 4-7 CPCTC notes GBMPs for Unit 3 Class work/ Homework

Warm-Up Which postulate or Theorem proves the triangles are congruent? Complete the congruence statement: Given ΔABC ΔRST, m<A=2x+17, m<S=x–6, and m<T = 52, find the value of x.

HW Check

4-4, 4-7 CPCTC CPCTC: Corresponding Parts of Congruent Triangles are Congruent You will use this during your proofs.

You cannot use CPCTC to prove 2 triangles are congruent **You cannot use CPCTC to prove 2 triangles are congruent. ** You cannot use CPCTC BEFORE one of the 5 congruence postulates (SSS, SAS, etc.) **CPCTC can only be used AFTER two triangles have been proved congruent!!!

Homework Worksheet

Homework Check