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4-1 Congruent Figures. Congruent figures have same size and shape When 2 figures are congruent you can slide, flip, or turn one so that it fits exactly.

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Presentation on theme: "4-1 Congruent Figures. Congruent figures have same size and shape When 2 figures are congruent you can slide, flip, or turn one so that it fits exactly."— Presentation transcript:

1 4-1 Congruent Figures

2 Congruent figures have same size and shape When 2 figures are congruent you can slide, flip, or turn one so that it fits exactly on the other one

3 Congruent Figures Congruent Polygons: Have congruent corresponding parts – matching sides and angles. When naming congruent polygons you must list corresponding vertices in the same order

4 Problem 1: Finding Congruent Parts

5 Problem 2: Using Congruent Parts The wings of an SR-71 Blackbird aircraft suggest congruent triangles. What is m<D?

6

7 Problem 3: Finding Congruent Triangles Are the triangles congruent? Justify your answer.

8

9 Third Angles Theorem If two angles of one triangle are congruent to two angles of another triangle, then the third angles are congruent

10 Problem 4: Proving Triangles Congruent

11

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