A regular octagon is inscribed in a circle of radius 10 cm. Find the area of the octagon.

Find the perimeter of a regular hexagon with sides of length 8 cm.

The sum of the angles in a regular polygon is 1980 degrees.

In the figure, a regular polygon with 9 sides has been divided into 9 congruent isosceles triangles by line segments drawn from the center of the polygon to its vertices. What is the value of x?

Archimedes' Approximation of Pi

What are Types of Polygons

Limit of area of n-sided inscribed regular polygons

Limit of perimeter of n-sided inscribed regular polygons

Types of Quadrilaterals

What are the types of triangles