A regular heptagon is a polygon, or closed figure, with seven sides of the same length.
A polygon.
A hexagon.
If none of the sides ever cross each other, there cannot be a closed plane figure.
Triangle
A polygon. It has to have straight sides, so that it can be divided into triangles.
A regular heptagon is a polygon, or closed figure, with seven sides of the same length.
If they are straight sides, then a polygon. Otherwise, simply "a closed plane figure with 3 or more sides".
A pentagon. A closed figure means that all the lines of the figure are connected.
A heptagon is a 2-dimentional closed figure with seven sides, each side being a line segment
A closed figure with seven sides is a "heptagon." It is sometimes also called a "septagon."
This closed figure, with straight sides, is known as a Polygon.
It is a heptagon.
square
no.
A polygon.
A hexagon.