Q:
# How many sides does a regular polygon have?

**The number of sides a regular polygon has is indicated by the name of the polygon.** For example, a pentagon has five sides, and an octagon has eight sides. The fewest number of sides a polygon can have is three, but there is no upper limit.

The name "polygon" comes from the Greek words "polus," meaning "many," and "gonia," meaning "corner" or "angle." To be classified as a regular polygon, all of the sides and angles must be congruent. A three-sided regular polygon is called an equilateral triangle. A four-sided regular polygon is called a square. The names of many-sided polygons can be constructed from Greek-derived number names, such as dodecagon for a 12-sided polygon or hexadecagon for a 17-sided polygon. However, past a certain number of sides, mathematicians normally use the abbreviation "n-gon," so a 25-sided polygon is called a 25-gon.

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Q:
## How many degrees are in a polygon?

A: The degrees of a polygon, or the sum of its angles, depends on the number of sides the polygon has. The sum of the degrees of the angles of a polygon equal... 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: -
Q:
## What is a three-sided polygon called?

A: A polygon with three sides is called a triangle. All triangles consist of three lines that are not collinear and three angles. Polygons can have any number... Full Answer >Filed Under: -
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: