If all sides are equal in the given figure then, identify a regular hexagon.

The sum of the interior angles of a regular hexagon is_____

(A) $360°$

(B) $540°$

(C) $720°$

(D) $900°$

All closed curves form polygons.

Examine the given figure and explain whether it is a polygon or not. (Yes/No)

In the figure, $ABCDEF$ is a regular hexagon. Prove that $ACDF$ is a rectangle.

Draw a hexagon of equal sides and unequal angles.