Chapter 11: Measuring Length and Area 11.6.1 Area of Regular Polygons.

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Presentation transcript:

Chapter 11: Measuring Length and Area Area of Regular Polygons

Apothem and Radius  For regular polygons  The Radius is a segment with the center and a vertex as endpoints  The Apothem is a segment with the center as an end point and perpendicular to a side Apothem Radii

Find the measure of a Central Angle  For each side, there is a central angle, there for the measure of each central angle is where n is the number of sides Central angle (Isosceles triangle) Apothem is angle bisector Why?

Find the measure of each angle ft 16ft 8ft 15ft

Find the measure of the apothem 12in 6in 27.5 ⁰ a

Homework  p. 765   1 – 13,