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# Jan. 5 Similar Polygons

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• 1. Similar Polygons
• 2. Some types of polygons
• 3. A polygon is a shape that has any number of straight sides connected at vertices(corners). A triangle is a 3 sided polygon. A square is a 4 sided polygon.
• 4. Polygons are similar when... Two polygons have equal corresponding angles and The corresponding sides are proportional We have already studied a special case of similar polygons Similar triangles
• 5. Are these similar polygons??? 6 3 2 1
• 6. Which of the following are similar polygons?? 10 6 5 8 A 5 B 4 C
• 7. H A 0 95 0 E 95 L 0 0 160 0 B 0 100 I 100 160 0 115 D 0 0 115 70 K C 0 70 Name all of the corresponding angles J Set up proportions of all corresponding sides
• 8. Find the missing side HL H 0 A 2.25 95 2.2 L 1.5 95 0 0 0 0 E I 100 160 2.4 B 100 0 160 1.6 0 0 115 D 115 K 3 70 0 4.5 2.5 0 C 70 3.75 J
• 9. Find the missing sides HL, JK, BC, DE L A 0 2.4 0.75 H B 0 0 95 0 16 0 10 0 0 1 95 5 K 2.25 11 16 0 E 0 0 0 11 10 5 0 70 0 D I 0 C 2.7 4 70 J
• 10. Read Pages 154-156 Do questions 2,3,5,6,10,12 pages 157-158