A: ### Quick Answer

**A quadrilateral has four angles.** There are many different types of quadrilaterals, and each has a specific name based on the shape that is formed.

A quadrilateral can be named based off of the lengths of the sides and what type of angles are formed in the interior. A square is a quadrilateral with four equal sides and all interior angles equaling 90 degrees each. A rectangle is a quadrilateral that has interior angles that each equal 90 degrees, but all sides are not the same length. A rhombus is a quadrilateral that has interior angles that are equal, but they are not 90 degrees. The sides are also all the same length.

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## What is the diagonal of a quadrilateral?

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Full Answer >**A diagonal is a line between two vertices of a polygon that is also not a side of the polygon, and a quadrilateral is a four-sided polygon.**Veritces are the points where sides of a polygon meet, and a polygon is an enclosed figure formed by three or more line segments. Using the diagonal formula n(n-3) / 2 where n is the number of sides, each quadrilateral has two diagonals.Filed Under: - Q:
## What do you call a polygon with four sides, none of which are the same size?

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Full Answer >**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.Filed Under: - Q:
## What is another name for a regular quadrilateral?

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Full Answer >**A regular quadrilateral is also called a square.**Regular polygons are two-dimensional shapes in which all sides are of equal length and all angles are of equal breadth. A quadrilateral is any four-sided polygon. A square has four sides and four angles, all of equal size.Filed Under: - Q:
## What is a 4-sided polygon called?

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Full Answer >**A four-sided polygon is known as a quadrilateral.**There are various types of quadrilaterals, but the most recognized are the square, rectangle, rhombus, trapezoid and the parallelogram. Quadrilaterals are always flat shapes that have four straight edges and four corners or vertices.Filed Under: