1. Chapter 10: Area Section 10-3: Areas of Regular Polygons

2. Objective: To find the area of a regular polygon.

3. Vocabulary Radius of a Regular Polygon Apothem

4. Radius The radius of a polygon is the distance from the center to a vertex.

5. Apothem The apothem is the perpendicular distance from the center to a side.

6. Theorem 10-6: “Area of a Regular Polygon” The area of a regular polygon is half the product of the apothem and the perimeter.

7. Finding the Area of a Regular Polygon Find the area of the regular polygon: 11 12

8. Find the Area of a Regular Polygon Find the area of a regular nonagon with 6 cm sides and a 4 cm apothem.