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OpenStudy (anonymous):
A polygon can be split into 17 triangles by drawing diagonals from one corner. How many sides has the polygon?
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OpenStudy (anonymous):
Why u delete your post
OpenStudy (anonymous):
It is 19, draw a few, u will see...
OpenStudy (anonymous):
I have no idea where to even begin
OpenStudy (anonymous):
|dw:1314181461152:dw|
OpenStudy (anonymous):
|dw:1314181513852:dw|
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OpenStudy (anonymous):
is there not a universal formula ?
OpenStudy (anonymous):
+2
OpenStudy (anonymous):
oh instead of -2
OpenStudy (anonymous):
Just look at the drawings, 2 vertices cannot reach...
OpenStudy (anonymous):
sorry, but I dont understand
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OpenStudy (anonymous):
U can split all the polygon but there are always 2 vertices left (because they are next to the start vertex and u don't have to draw them) So the sides is always +2
OpenStudy (anonymous):
|dw:1314181959084:dw|
OpenStudy (anonymous):
what are vertices?
OpenStudy (anonymous):
|dw:1314182034606:dw|
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