352915367
352915367 352915367
  • 07-12-2019
  • Mathematics
contestada

a polygon has 20 sides how many diagonals does it have

Respuesta :

ronangleeson011 ronangleeson011
  • 07-12-2019

Answer:

170

Step-by-step explanation:

n(n-3)/2

20(20–3)/2 = 170

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