1. Lesson 10-7 Pages 446-450 Polygons and Tessellations

2. What you will learn! How to classify polygons and determine which polygons can form a tessellation.

3. PolygonNonagonPentagonDecagon Hexagon Regular polygon HeptagonTessellation Octagon

4. What you really need to know!

5. Link to Pre-Made Lesson

6. Example 1: Determine whether the figure is a polygon. If it is, classify the polygon and state whether it is regular. If it is not a polygon, explain why. Not a polygon Has curves

7. Example 2: Determine whether the figure is a polygon. If it is, classify the polygon and state whether it is regular. If it is not a polygon, explain why. Hexagon Not Regular

8. Example 3: Find the measure of each angle of a regular heptagon. Round to the nearest tenth of a degree. 5 x 180 900° 900 ÷ 7 128.6°

9. Example 4: Ms. Pena is creating a pattern on her wall. She wants to use triangles with angles 120°, 30°, and 30°. Can Ms. Pena create a tessellation with these triangles?

10. The sum of the measures of the angles where the vertices meet in a tessellation is 360°. Since 360° is divisible by both 30° and 120°, the polygons can be arranged in a tessellation.

13. Page 448 Guided Practice #’s 4-7

15. Pages 446-448 with someone at home and study examples! Read:

16. Homework: Page 449-450 #’s 8-28 all #’s 32-45 all Lesson Check 10-7Chapter Test Preparation

22. Page 589 Lesson 10-7

23. Study Guide and Review Pages 462-464 #’s 6-22 (Odd answers in back of book)

30. Prepare for Test! Pages 465 #’s 3-14, 16

32. Prepare for Test! Pages 466-467 #’s 1-16