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)
9