Yes. A polygon has n(n-3)/2 diagonals, so if n=5: 5(2)/2 =5
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5 diagonals
5
0.5*(25-15) = 5 diagonals
There are five diagonals in a pentagon.
1 A square 2 A rectangle 3 A right angle trapezoid 4 An irregular pentagon 5 The diagonals of a rhombus 6 The diagonals of a kite