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OpenStudy (anonymous):
The interior angles of a polygon equal . How many sides does this polygon have?
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OpenStudy (anonymous):
(n-2)180 = 540 solve for n
OpenStudy (anonymous):
5
Parth (parthkohli):
^ Voila!
OpenStudy (anonymous):
=D
OpenStudy (anonymous):
But do you know WHY it's (n-2)*180?
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Parth (parthkohli):
I do!
OpenStudy (anonymous):
Well, a triangle has 180 degrees right? Right. Now pick a polygon, and start breaking it into triangles. How many triangles can you break it into? |dw:1357546554678:dw|
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