How many triangles are possible with area 3 Sq cm In a 4×4 dots grid of dimensions 3cm×3cm?
Number of posible triangles in a 4×4 dots grid
1
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permutations
combinations
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0Any three distinct points not on a common line form a triangle, don't they? So you could count all the unordered triples of points from the grid, then subtract the number of those that line up. – 2017-01-24
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0The hard part is counting how many triples are on a single line (colinear). Fortunately there are not all that many straight lines that pass through more than two grid points. – 2017-01-24