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3-1: Congruent Figures Honors Geometry

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**Congruent Figures Congruent figures have the same size and shape.**

Two triangles are congruent iff all pairs of corresponding parts are congruent. Order of vertices matters when listing congruent figures.

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Suppose.... Suppose the two triangles above are congruent in the following order:

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Mark these congruent: So the two triangles are congruent –

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**Included Angles / Sides**

is included by sides and Side is included by angles A and C.

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Congruent Polygons Two polygons are congruent iff all pairs of corresponding parts (sides and angles) are congruent.

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a postulate Any segment or angle is congruent to itself. (Reflexive Property).

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HOMEWORK 3-1 problems. R & N on 3-2 (including all theorems)

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