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drawing polygon with 9 vertices and 6 vertices

how can I draw a polygon with radius 10 and 9 vertices?
same thing for 6 vertices?

also what is the name of such polygons?
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slok
Asked:
slok
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1 Solution
 
joachimcCommented:
Hmm doesn't this look like a school question ?

You can use a triangle fan with a center point and 8 vertices around it.

The angle between points are 2PI/8

/Joachim
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slokAuthor Commented:
yes, this is related to school question.

my main probelm is at the angle. I have not touch maths for
like 12 years. the use of PI reminds me of radians (spelling?)
and degrees. I went back to library to read up on the diff.
between them. It helps.

Thanks
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joachimcCommented:
You are right. D3D normally uses radians instead of the normal 360 degree system, so that's why I used it.

/Joachim
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