4-2 Triangle Congruence by SSS

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4-2 Triangle Congruence by SSS SAS
11/18

• Objective To Determine whether triangles are
  congruent using SSS and SAS postulate

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Warm up
What can you conclude from each diagram
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Discovery Time!
Quickly Quietly Get into groups of 3

• Person 1 Make a triangle with lengths 2, 3, 4
  in.
• Person 2 Make a triangle with lengths 3, 4, 5
  in.
• Group Walk around and observe same triangles
  made by other groups
• Person 3 Record what observations your group
  have made

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SSS postulate
If 3 Corresponding Sides are congruent, then the
triangles are congruent.
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Ex 1
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SAS Postulate If two corresponding sides and
the included angle are congruent then the
triangles are congruent.
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Ex 2
From the info give, can you prove
Explain.
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Ex 3
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Ex 4
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Ex 5
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Homework

• Pg 189-190
• 2-30 evens
• Omit 6,