Solves the word problem, how many lines can be formed from (n) points no 3 of which are collinear.

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- The number of lines that can be formed from n points of which no 3 are collinear is n(n + 1)/2

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- collinear
- points that lie on a straight line
- collinear points that form unique lines
- line
- an infinitely long one-dimensional object with no width, depth, or curvature
- point
- an exact location in the space, and has no length, width, or thickness