Respuesta :

SoccerHalo

Answer:

15 sides

100 sides

Step-by-step explanation:

n(n-3)

--------  =  90          so n²-3n=180

   2

n²-3n-180 = (n-15) (n+12) = 15 because -12 is negative XD

same process with 4850 diagonals.

it should be 100 sides :D