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Mathematics 9 Online
OpenStudy (anonymous):

If all of the diagonals are drawn from a vertex of an n-gon, how many triangles are formed? n - 2 n - 1 n n + 1

OpenStudy (anonymous):

n-2

OpenStudy (anonymous):

can you exlpain why n-2

OpenStudy (anonymous):

yes plz do

OpenStudy (anonymous):

ok pl wait. let me draw.

OpenStudy (anonymous):

mmk

OpenStudy (anonymous):

ahh i see - it makes sense if you draw it for yourself

OpenStudy (anonymous):

|dw:1338042657926:dw|

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