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Similar Polygons

Similar Polygons. Similar Polygons. In geometry, two figures that have the same shape are called similar. Two polygons are similar polygons if corresponding angles are congruent and corresponding side lengths are proportional. A. C. F. G. H. E. D. B. ABCD ~ FEGH. R. T. 16. 20.

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Similar Polygons

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  1. Similar Polygons

  2. Similar Polygons • In geometry, two figures that have the same shape are called similar. • Two polygons are similar polygons if corresponding angles are congruent and corresponding side lengths are proportional. A C F G H E D B ABCD ~ FEGH

  3. R T 16 20 8 10 U S 12 Q P 15 • PRQ ~ STU • List all pairs of congruent angles • Write the ratios of the corresponding sides in a statement of proportionality • Check that the ratios of corresponding sides are equal

  4. Theorem 7.1 Perimeters of Similar Polygons • If two polygons are similar, then the ratio of their perimeters is equal to the ratio of their corresponding side lengths. A D E F C B IF ABC ~ DEF, then DE + EF + FD = DE = EF = FD AB + BC + CA AB BC CA

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