CPCTC http://www.lz95.org/lzhs/Math/knerroth/geometry/Geometry%20Chap%203%20PDF/3.3-CPCTC.ppt#256,1,CPCTC.

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Presentation transcript:

CPCTC http://www.lz95.org/lzhs/Math/knerroth/geometry/Geometry%20Chap%203%20PDF/3.3-CPCTC.ppt#256,1,CPCTC

Match the Corresponding Parts B C AB BC AC DF DE D EF E F

C.P.C.T.C. Corresponding Parts (of) Congruent Triangles (are) If two triangles are congruent, then their corresponding parts are also congruent. http://www.lz95.org/lzhs/Math/knerroth/geometry/Geometry%20Chap%203%20PDF/3.3-CPCTC.ppt#256,1,CPCTC

Very important!!!! Before you use CPCTC you must prove or know that the two triangles congruent!!! http://www.lz95.org/lzhs/Math/knerroth/geometry/Geometry%20Chap%203%20PDF/3.3-CPCTC.ppt#256,1,CPCTC

Using CPCTC http://www.lz95.org/lzhs/Math/knerroth/geometry/Geometry%20Chap%203%20PDF/3.3-CPCTC.ppt#256,1,CPCTC

With your partner write down all congruent parts. http://www.lz95.org/lzhs/Math/knerroth/geometry/Geometry%20Chap%203%20PDF/3.3-CPCTC.ppt#256,1,CPCTC

Find the value of all the angles ΔJKL  ΔMKL J = 3x + 2 JLK = 90° M = 5x - 32 J = JKL = JLK = MLK = MKL = M = 53 37 90

CPCTC in a Proof: Given: TI  SN TN  SI Prove:  T   S T S E I N

CPCTC in Proofs: A J M R I Given: JM  RM AM  MI Prove: AJ  RI