A polygon with 7 sides and 7 vertices is known as heptagon.
What is the number of diagonals in a (i) heptagon (ii) octagon (iii) polygon of 12 sides ?
A polygon with 4 sides, 4 vertices and 4 angles is known as:
The line segment joining any two adjacent vertices of a polygon is called a side. In a heptagon, write the number of sides