SOLUTION: I would like to know the number of Triangles Formed with Diagonals from one Vertex of a Heptagon, Octagon, Nonagon, Decagon, Hendecagon, Dedecagon, Tridecagon, Tetradecagon, Pentad
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-> SOLUTION: I would like to know the number of Triangles Formed with Diagonals from one Vertex of a Heptagon, Octagon, Nonagon, Decagon, Hendecagon, Dedecagon, Tridecagon, Tetradecagon, Pentad
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Question 16408: I would like to know the number of Triangles Formed with Diagonals from one Vertex of a Heptagon, Octagon, Nonagon, Decagon, Hendecagon, Dedecagon, Tridecagon, Tetradecagon, Pentadecagon, Hexadegon, Heptadecagon, Octadecagon, Enneadecagon. Answer by Earlsdon(4978) (Show Source):
You can put this solution on YOUR website! The number of triangles formed by drawing diagonals from one vertex to every other vertex in a polygon is always 2 less than the number of sides of the polygon. Number of triangles = n - 2 where n is the number of sides in the polygon.
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