Question

polygon has 35 diagonals the number of sides in this polygon are​

Answer 1

Answer:

Number of diagonals in polygons of n sides = n(n-3)/2. So n = 10. So a decagon has 35 diagonals.

Answer 2

Answer:

The diagonal of a polygon with"n"sides can be found out using the formula -

(n²-3n)

So according to the formula:(n²-3n)/2=35

»(n²-3n)=70

»n²-3n-70=0

(n+7)=0

As n cannot be negative

the number of sides of the polygon=10

Step-by-step explanation:

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