A Rhombus Is A Trapezoid

A rhombus is a quadrilateral with four congruent sides, while a trapezoid is a quadrilateral with at least one pair of parallel sides. It may seem strange to compare these two shapes as they have different defining characteristics, however, some similarities and differences exist between them that are important to understand.

Similarities Between Rhombus and Trapezoid:

1. Both Shapes Are Quadrilaterals

Quadrilaterals are shapes that have four sides, and both rhombus and trapezoid are in this category. As four-sided shapes, they share some similarities in their properties and geometry.

2. Both Shapes Have Four Vertices

Vertices refer to the points at which the sides of a shape meet. Both rhombus and trapezoid have four vertices, which is a defining characteristic of quadrilaterals.

3. Both Shapes Are Planar

“Planar” means having two dimensions and lying flat on a plane. Both rhombus and trapezoid are planar shapes, which means they exist in two dimensions and can be drawn on flat surfaces.

4. Both Shapes Can Be Used to Create Tessellations

A tessellation is a repeating pattern of shapes that fits together without any gaps or overlaps. Both rhombus and trapezoid can be used to create tessellations, which can be used for various purposes in design and architecture.

Differences Between Rhombus and Trapezoid:

1. Rhombus Has Four Congruent Sides, While Trapezoid Does Not

A rhombus has four sides that are all of equal length, while a trapezoid has only one pair of parallel sides. The other two sides of a trapezoid may be of different lengths.

2. Rhombus Has Diagonals Perpendicular to Each Other, While Trapezoid Does Not

A diagonal is a straight line connecting two non-adjacent vertices of a shape. In a rhombus, the two diagonals are perpendicular to each other. In contrast, the diagonals of a trapezoid do not intersect perpendicularly.

3. Rhombus Has Symmetry Across Diagonals, While Trapezoid Does Not

A shape is symmetrical if it is possible to fold it in half and have both sides match perfectly. A rhombus is symmetrical across both diagonals, while a trapezoid is not symmetrical.

4. Trapezoid Can Have an Isosceles Form, While Rhombus Cannot

An isosceles trapezoid is a trapezoid with two non-parallel sides of equal length. Such a shape is not possible with a rhombus, which has all four sides of equal length.


1. Can a rhombus be a trapezoid?

Yes, a rhombus can be considered a special case of a trapezoid. A trapezoid is a quadrilateral with at least one pair of parallel sides. Since a rhombus has two pairs of parallel sides, it can be considered a trapezoid with both pairs of parallel sides being equal in length.

2. Is a trapezoid always a parallelogram?

No, a trapezoid is not always a parallelogram. A parallelogram is a quadrilateral with two pairs of parallel sides. While all parallelograms are trapezoids, not all trapezoids are parallelograms.

3. What are the properties of a rhombus?

A rhombus has four equal sides and opposite angles that are equal. Its diagonals bisect each other at right angles, and it has rotational symmetry of order two.

4. What is an isosceles trapezoid?

An isosceles trapezoid is a trapezoid with two non-parallel sides of equal length. It may also have two sides of different length that are parallel to each other.


A rhombus and trapezoid are two different types of quadrilaterals with different properties and defining characteristics. While a rhombus has four congruent sides and diagonals that bisect each other at right angles, a trapezoid has one pair of parallel sides and may also have diagonals that do not intersect perpendicularly. Understanding the similarities and differences between these shapes is essential in geometry and mathematics.