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Lesson 7.2 Similar Polygons

Lesson 7.2 Similar Polygons. Pages 365 - 368. Similar Figures. D. A. In Geometry, two figures that are the same shape are called similar figures . Similar figures have corresponding angles that are congruent. Similar figures have corresponding side lengths that are proportional. B. C.

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Lesson 7.2 Similar Polygons

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  1. Lesson 7.2 Similar Polygons Pages 365 - 368

  2. Similar Figures D A In Geometry, two figures that are the same shape are called similarfigures. Similar figures have corresponding angles that are congruent. Similar figures have corresponding side lengths that are proportional. B C E F Name all congruent angles. Write all corresponding sides in ratios.

  3. If two polygons are similar, then the ratio of the side lengths should all be equal (called the “scale factor”) • Determine if the triangles are similar. • If they are similar, write a similarity statement. • Find the scale factor for any similar figures. A 9 12 B C 15 M 12 16 N P 20

  4. If two polygons are similar, then the ratio of the side lengths should all be equal (called the “scale factor”) • Determine if the figures are similar. • If they are similar, write a similarity statement. • Find the scale factor for any similar figures. A 10 B 6 C D 12 M N 9 O P

  5. The figures below are similar. Use a proportion to find the missing side length. A 10 8 L B C x 15 12 N 9 M

  6. The figures below are similar. Use a proportion to find the missing side length.Triangle PQR ~ Triangle STU P 8 7 R Q 9 x S 16 14 T U x

  7. Assignment: 7.2 Worksheet

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