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Mathematics 14 Online
OpenStudy (anonymous):

how many triangles formed in nine dots

OpenStudy (anonymous):

8

OpenStudy (solomonzelman):

depends on how these dots are one the paper it can be 0, if dots are in a straight line, but I think it can certainly be more than 8, |dw:1416578017849:dw|

OpenStudy (solomonzelman):

|dw:1416578057791:dw|

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