How many diagonals a triangle have?if not,what is the reason?
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Answered by
22
A triangle has zero diagonals.Diagonals must be created across vertices in a polygon, but the vertices must not be adjacent to one another. A triangle has only adjacent vertices.
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No. of diagonals that a triangle have= n(n-3) /2
= 3(3-3)/2
=3(0)/2
=0
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