Question

what is the number of diagonals in polygon of 30 sides​

Answer 1

The number of diagonals in a polygon = n(n-3)/2, where n is the number of polygon sides. For a convex n-sided polygon, there are n vertices, and from each vertex you can draw n-3 diagonals, so the total number of diagonals that can be drawn is n(n-3)

Answer 2

Answer:

no of polygons in 30 sided polygon is 405