You can
put this solution on YOUR website!How many diagonals,leaving from one vertex only, has a hexagon have?
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Two points determina line.
There are five vertices other than the one you are drawing lines from.
With the starting point they determine 5 lines.
But two of those lines are sides of the hexagon.
So there are three diagonals that can be draw from each vertex.
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Draw the figure and you will see the three diagonals.
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Cheers,
Stan H.