Q:
# Is a Circle a Polygon?

**A circle is not a polygon because it does not conform to the definition of a polygon.** The definition of a polygon is a closed figure formed by straight lines or straight sides. Although the circle is a closed figure, it is not formed by straight line segments.

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Another condition for a figure to be classified as a polygon is that its sides must not cross each other. Some examples of polygons are a square, rectangle, hexagon, triangle and pentagon. Polygons also can be convex, concave irregular or regular figures. While concave polygons have reflex angles, convex polygons do not. Regular polygons have sides that are of equal length and all interior angles have equal measurement. Irregular polygons do not conform to this definition of regular polygons.

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Q:
## How Many Sides Does a Nonagon Have?

A: A nonagon, also called an enneagon, is a polygon with nine sides. The name comes partially from the Latin word for ninth, "nonus." Full Answer >Filed Under: -
Q:
## How Many Sides Does a Polygon Have?

A: A polygon is a plane figure that has "at least three straight sides and angles," according to Oxford Dictionaries. However, polygons can have more than thr... Full Answer >Filed Under: -
Q:
## What Is a Nine-Sided Polygon Called?

A: A nine-sided polygon is called a nonagon. The prefix "non" is derived from the Latin "nonus," which means "ninth" to allude to the nine sides and angles of... Full Answer >Filed Under: -
Q:
## What Shapes Have Only One Pair of Parallel Side?

A: Any polygon with four of more sides can contain one pair of parallel sides. However, out of all the possibilities, only the trapezoid has a name. Trapezoid... Full Answer >Filed Under: