Question

a polygon of n sides has (n(n-3))÷2digonals.if a polygons has 9 signals,find the no. of sides of the polygon​

Answer 1

Answer:

27..

Step-by-step explanation:

In the formula {n(n-3)}÷2diagonals.

so,put the 9 on the place of n..

{9(9-3)}÷2. the answer is 27