A polygon with seven sides is called a heptagon.
Examples of Heptagon.
The figure below shows a heptagon. All its sides do not measure the same.
The figure above shows a regular heptagon. All its sides measure the same.

A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 4
Correct Answer: C
Step 1: A polygon with seven sides is called a heptagon
Step 2: A polygon with all its sides measuring the same is called a regular polygon
Step 3: Among the choices, Choice C has all its seven sides of the same measure
So, it is a regular heptagon.
Q1: Which of the following shapes is a heptagon?
Q2: A regular heptagon has...
Q: What is the difference between a regular and irregular heptagon?
A: A regular heptagon has all sides and all angles equal. An irregular heptagon has sides and/or angles that are not all equal.
Q: Can a heptagon be concave?
A: Yes, a heptagon can be concave if at least one of its interior angles is greater than 180 degrees.