Triangle
Geometry
Level
2
G is the centre of a regular hexagon ABCDEF. How many triangles can be formed by using vertices from amongst these seven points?
29
32
35
27
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1 solution
Hexagon is formed using 6 points in space. Here, in the question we can select center as well therefore possible number of Triangles will be 7C3 but among them there will be cases which will form straight line( longest diagonal),we need to deduct that. Hence, total triangles will be 7C3 -3