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Finding the Area of Regular Polygons

Learn how to find the area of a regular polygon using the concepts of radius and apothem. Practice examples included.

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Finding the Area of Regular Polygons

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  1. 10.3 Areas of Regular Polygons Essential Question: How do you find the area of a regular polygon?

  2. You can circumscribe a circle about any regular polygon. • The center of a regular polygon is the center of the circumscribed circle. • Radius: distance from the center to a vertex. • Apothem: perpendicular distance from the center to a side.

  3. Example 1

  4. Practice • Find the measure of each angle.

  5. Area of a Regular Polygon

  6. Example 2

  7. Example 3

  8. Practice • Find the area of the regular polygon and round to the nearest inch.

  9. Summary • Answer the essential question in detailed, complete sentences. • How do you find the area of a regular polygon? • Write 2-4 study questions in the left column to correspond to the notes.

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