1. Missy McCarthy Okemos High School Math Instructor G EOMETRY WITH M C C ARTHY

2. W HAT YOU ’ LL LEARN

3. C IRCLES

4. F ORMULAS FOR C IRCLES

5. E XAMPLE

7. R EGULAR P OLYGON Center: Apothem: Central Angle:

8. A REA OF A R EGULAR P OLYGON

10. E XAMPLE

13. W RAP -U P Re-watch any parts of the video for a full understanding of formulas for circles and regular polygons. All formulas should be MEMORIZED! If you’re watching on YouTube, type questions in the comments section or jot them down and bring them to class. Lesson quiz and worksheets tomorrow in class.