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bzava17
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i need help! please help
How many lines are determined by 7 points, no 3 of which are collinear? How may triangles are determined by the same points if no 4 are coplanar?
 one year ago
 one year ago
bzava17 Group Title
i need help! please help How many lines are determined by 7 points, no 3 of which are collinear? How may triangles are determined by the same points if no 4 are coplanar?
 one year ago
 one year ago

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kantalope Group TitleBest ResponseYou've already chosen the best response.0
I don't know if there is a formula but I think there is going to be 7 points (why so big a number?) anyway 12, 13, 14, 15, 16, 17 21(but that is the same at 12 so wont count, 23, 24, 25, 26, 27 31(already accounted for), 32(already counted), 34, 35, 36, 37 I see a pattern emerging...
 one year ago
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