How many diagonals does each of the following have?

A. A convex quadrilateral


B. A regular hexagon


C. A triangle


(a) There are 2 diagonals in a convex quadrilateral.(See in figure below)


(b) There are 9 diagonals in a regular hexagon


(Represented in figure)



(c) A triangle does not have any diagonal in it


(Represented in figure)



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