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

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Presentation transcript:

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

Objective: To find the area of a regular polygon.

Vocabulary Radius of a Regular Polygon Apothem

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

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

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

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

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