Which Quadrilaterals Have Four Right Angles?

A quadrilateral is a polygon with four sides.
••• Photodisc/Photodisc/Getty Images

In geometry, a quadrilateral is a polygon with four sides or edges. There are several polygons that share the characteristics of a quadrilateral. However, while at least six shapes can be considered quadrilaterals, only two have four right angles -- rectangles and squares.

Properties of Quadrilaterals

Quadrilateral quite literally means “four sides.” It can refer to any mathematical shape that is made up of four edges and four corners; however, the edges must be straight lines. Another property of a quadrilateral is that the sum of the interior angles must equal 360 degrees. As long as a shape fits within these parameters, it can be considered a quadrilateral.


A rectangle is one kind of quadrilateral with four right angles. The definition of a rectangle is a shape with four sides and four right angles. This means each angle in a rectangle measures 90 degrees. Another property of a rectangle is that opposite sides are parallel to each other and equal in length.


A square is the other type of quadrilateral with four right angles. The definition of a square is a shape with four equal sides and four right angles. A square is distinguished from a rectangle in that every side of a square is equal in length. Opposite sides are also parallel to each other.

Other Types of Quadrilaterals

There are several other shapes that fit the parameters of a quadrilateral, though they do not have four right angles. A parallelogram is a simply a quadrilateral with parallel opposite sides. Different from a rectangle, a parallelogram does not have to have four right angles. A rhombus is a quadrilateral where all four sides are equal in length. Different from a square, a rhombus does not have to have four right angles. A trapezoid is a shape with only one pair of opposite parallel sides.

Related Articles

Three Special Types of Parallelograms
Six Properties of a Parallelogram
What Are the Degrees of a Quadrilateral?
How to Calculate the Perimeter of Quadrilaterals
Properties of Rectangular Prisms
How to Find the Perimeter of a Six-Sided Figure
What Are the Types of Tessellations?
How to Find the Height of a Rhombus
Difference Between Vertices & Edges
How to Calculate the Area of an Oblong
How to Calculate Quadrilateral Area
Similarities & Differences of Cubes & Cuboids
How to Find the Volume of a Parallelogram
How to Solve a Hexagon
What Is a Two-Dimensional Shape?
How to Find the Number of Sides of a Polygon
How to Convert Square Dimensions to Round
Interesting Facts About Triangles in Math
The Different Kinds of Shapes in Math
Rules for Creating Tessellations

Dont Go!

We Have More Great Sciencing Articles!