11.4­11.5.notebook
April 21, 2014
Find the area of this regular hexagon with a side length of 5 inches.
5 in
Apr 7­8:15 PM
11.4 Area of Regular Polygons
Apothem: segment from the center of a regular polygon and to a side
Radius: segment from the center to a vertex
Central Angle of a Regular Polygon:
360 # of sides
Apr 7­8:04 PM
1
11.4­11.5.notebook
April 21, 2014
Area of a Regular Polygon:
A=area
A= aP
2
a=apothem
P=perimeter
23.4in2
Apr 7­8:11 PM
Apr 7­8:25 PM
2
11.4­11.5.notebook
April 21, 2014
Composite Figure: figure that can be separated into multiple simple shapes
61.1 ft2
Apr 7­8:28 PM
Apr 7­8:29 PM
3
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April 21, 2014
11.5 Area of Similar Figures
Apr 7­8:33 PM
Apr 7­8:34 PM
4
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April 21, 2014
Homework:
p. 811 #9-17 odd
p. 821 #9-17 odd
Apr 7­8:05 PM
Apr 7­8:22 PM
5
11.4­11.5.notebook
April 21, 2014
Apr 7­8:22 PM
Apr 7­8:35 PM
6
11.4­11.5.notebook
April 21, 2014
Apr 7­8:36 PM
Apr 7­8:38 PM
7