Geometry Using Apothems With Other Shapes
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Another Pizza
Using Apothems With Other Shapes

 

 That pizza trick from the last page works on any shape

  where the angles and sides are the same.
 
 Example:
 Find the area of the octagon ...
 

 

 
 Remember, the apothem cuts each side into two pieces.
 That means we get twice as many triangles as sides.
 
 Example:
 Find the area of this square 
 using the apothem method ...
 

 

 
 OK, so maybe we already had ways
 to calculate the area of a square.
 But now we know that the apothem method really works!
 

   copyright 2005 Bruce Kirkpatrick

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