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11.6 notes

  1. 1. 11.6 Area of Regular Polygons March 08, 2012 B 106.03 in.2, 141.31 in.2 E L L 211.09 cm2 W O R 23.18 ft2 KHW pg. 765 #6­16, 27­29 1
  2. 2. 11.6 Area of Regular Polygons March 08, 2012 11.6 Areas of Regular Polygons Objectives: 1. To apply area formulas of regular polygons to solve problems. 2. To develop problem-solving skills. What do we know about regular polygons? Apothem: is a perpendicular segment from the center of the polygon to a side of the polygon. Area of a Regular Polygon =1/2aP a is the apothem P is the perimeter or A = 1/2ans where n = number of sides s = length of a sideHW pg. 765 #6­16, 27­29 2
  3. 3. 11.6 Area of Regular Polygons March 08, 2012 1. A is about _____ s = 24 cm a = 24.9 cm 2. Regular nonagon: a = 9.6cm and A = 302.4 cm2, P is about _________ 3. Find the shaded area of the regular octagon ROADSIGN. The apothem measures about 20 cm. Segment GI measures about 16.6 cm.HW pg. 765 #6­16, 27­29 3
  4. 4. 11.6 Area of Regular Polygons March 08, 2012 11.6 HW pg. 765 #6-16, 27-29HW pg. 765 #6­16, 27­29 4

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