4.4 Using Congruent Triangles: CPCTC

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4.4 Using Congruent Triangles CPCTC

• Chapter 4
• Congruent Triangles

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4.4 Using Congruent Triangles CPCTC

• CPCTC
• Corresponding Parts of Congruent Triangles are
  Congruent
• You must prove that the triangles are congruent
  before you can use CPCTC

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Using CPCTC

• Given ltABD ltCBD, ltADB ltCDB
• Prove AB CB

B
A
C
D
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Using CPCTC

• Given MO RE, ME RO
• Prove ltM ltR

O
R
M
E
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Using CPCTC

• Given SP OP, ltSPT ltOPT
• Prove ltS ltO

O
T
S
P
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Using CPCTC

• Given KN LN, PN MN
• Prove KP LM

K
L
N
M
P
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Using CPCTC

• Given ltC ltR, ltT ltP, TY PY
• Prove CT RP

C
R
Y
P
T
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Using CPCTC

• Given AT RM, AT RM
• Prove ltAMT ltRTM

A
T
R
M
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Practice

• Pg 204 1-4 Write a Proof for each
• Pg 205 7-14 Write a Proof for each
• Pg 206 15-17
• Pg 207 21 and 22 Write a Proof for each