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 Are Some Names of Irregular Shapes?

A: Unlike a regular shape, an irregular shape is a polygon with sides that aren't all equal and unequal angles. Some conventional geometric shapes, such as th... Full Answer >Filed Under: -
Q:
## What Is a 25-Sided Polygon Called?

A: A polygon with 25 sides is called a icosikaipentagon. Polygon names are constructed according to the tens unit and the single digit unit. Full Answer >Filed Under: -
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## What Is a Polygon With Four Sides and Four Angles Called?

A: A polygon with four sides and four angles is called a quadrilateral. Quadrilaterals are two-dimensional, closed shapes with angle measurements that add up ... Full Answer >Filed Under: