This is the "5.6: Indirect Proof and Inequalities in 2 Triangles" page of the "Geometry Chapter 5" guide.
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Last Updated: Jan 19, 2011 URL: http://libguides.mpsaz.net/dhmahlman Print Guide RSS Updates

5.6: Indirect Proof and Inequalities in 2 Triangles Print Page
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Theorems

1.) Hinge Theorem: If two sides of one triangle are congruent to two sides of another triangle, and the included angle of the first is larger than the included angle of the second, then the third side of the first triangle is longer than the third side of the second triangle.

F1E1 > BC

F3E3 < F2E2

 

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