Explain how the formula for the area of a regular polygon is derived from that of a triangle.
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OpenStudy (jack1):
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OpenStudy (jack1):
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OpenStudy (jack1):
do u understand about arcs from interior angles of a circle...?
OpenStudy (jack1):
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OpenStudy (jack1):
are u even there dude...? @lashon20
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OpenStudy (anonymous):
yea my bad im here
OpenStudy (jack1):
cool, so area of polygon = [ (s^2) * n ]/ 4 * tan (180/n)
OpenStudy (jack1):
s = side length
n = number of sides
OpenStudy (anonymous):
thanks for the help
OpenStudy (jack1):
haven finished yet dude...
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OpenStudy (anonymous):
yea
OpenStudy (jack1):
so dude, if the polygon was 3 sided, the angle coming out from the center would be 360/n for the apex of each triangle
= 360/3 for a triangle
= 120 degrees
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OpenStudy (jack1):
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OpenStudy (jack1):
so area of this little triangle (with an apex of 120 degrees)
Area = 1/2 x base x height
as base of this triangle = side length of polygon
Area = 1/2 x side length x height
and height = ...?
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