Q:
# What Do You Call a Polygon With Four Sides, None of Which Are the Same Size?

**In general, a shape with four sides, whether they are equal or not, is called a quadrilateral.** Another name for this type of shape is a tetragon.

Credit:
Tom Woodward
CC-BY-2.0

A polygon that does not have equal sides has a special name, an irregular polygon. However, that name can be applied to a polygon that has any number of sides, as long as the sides don't match up. Therefore, a polygon with 12 sides could be an irregular polygon. Alternatively, an irregular polygon can be one that does not have matching angles, such as a concave polygon, whether or not pairs of the sides are equal in length.

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

A: By its very definition, a quadrilateral is merely a shape with four sides and four vertices or corners. The prefix "quad-" simply means "four" and lateral ... Full Answer >Filed Under: -
Q:
## What Is a Concave Quadrilateral?

A: A concave quadrilateral is a shape that has four sides and contains an indentation where the internal angle is greater than 180 degrees. The most common ex... 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 Regular Shape in Math?

A: A regular shape, also known as a regular polygon, is a shape that has sides that are all equal. If there are sides of differing lengths, these shapes are k... Full Answer >Filed Under: