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4.4 Using Congruent Triangles CPCTC 2011
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4.4 Using Congruent Triangles: CPCTC
Objective: Use triangle congruence and CPCTC to prove that parts of two
triangles are congruent.
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Warmup:
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CPCTC
Review: You can use three parts of triangles to show that triangles are congruent with SSS, SAS, ASA, and AAS.
Once you know triangles are congruent, you can make conclusions about the remaining parts because, by definition, corresponding parts of congruent triangles are congruent.
4.4 Using Congruent Triangles CPCTC 2011
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Statements Reasons
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Statements Reasons
Example:
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Proof
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slide slide
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About how wide was the river if the officer stepped off 20 paces and each pace was about 2 1/2 feet long?
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Homework: page 222
(1 8, 14, 26, 27)