Trapezoid Vs Rhombus

Trapezoid Vs Rhombus: A Comprehensive Comparison

Geometry is a subject that involves the study of shapes, sizes, and measurements of things. It comprises various shapes such as rectangles, squares, triangles, trapezoids, rhombuses, among others. Two of the most commonly confused shapes are Trapezoids and Rhombuses. In this article, we will compare Trapezoids and Rhombuses, noting their similarities and differences, and highlight the key properties of each shape.


A trapezoid is a quadrilateral with only one pair of parallel sides. The two parallel sides are called the bases, while the other two sides are the legs. The legs of the trapezoid can be either equal or unequal in length. Trapezoids can be classified into several types, such as Isosceles Trapezoids, Right Trapezoids, and Scalene Trapezoids.


A rhombus is also a quadrilateral with four sides, which are all equal in length. It has two pairs of parallel opposite sides with each pair intersecting at four equal angles. In other words, a rhombus is a special type of parallelogram (a four-sided figure with opposite sides parallel).

Comparison between Trapezoid and Rhombus


1. Shape

The shape of a trapezoid is like a table with one pair of parallel lines. The shape of a rhombus is like a diamond that can be seen on playing cards and other signs.

2. Sides

Both shapes have four sides; however, the rhombus has four equal sides, while the trapezoid has two parallel sides and two non-parallel sides.

3. Angles

In a trapezoid with non-parallel sides, angles opposite to each other are not equal, unlike in Rhombus, where all angles are equal.

4. Diagonal

A trapezoid has only one diagonal, while a rhombus has two diagonals that cut each other at right angles.

5. Symmetry

A rhombus has rotational symmetry of order two, where it can be rotated 180 degrees, while retaining its original shape. A trapezoid, on the other hand, does not exhibit any rotational symmetry.

6. Perimeter

The perimeter of a trapezoid can be calculated by adding the lengths of all its sides, while for a Rhombus, it is four times the length of one side.

Similarities between Trapezoid and Rhombus

1. Both are quadrilaterals.

2. They are both planar figures with four sides.

3. Both have two pairs of adjacent sides that share a common vertex.

4. They both have two diagonals.

5. Both have exactly two lines of symmetry.

6. They can be used to form tessellations in which they fit into each other to cover a flat surface without any gaps or overlaps.


Q: What is a trapezoid used for?

A: Trapezoids can be used as supports or structural components in construction work. They can be used to create space frames or shape steel for a variety of construction projects.

Q: How can you tell if a shape is a rhombus or a kite?

A: A rhombus has two pairs of opposite equal angles, while a kite has only one pair of opposite equal angles.

Q: Is a kite a type of trapezoid?

A: No, a kite is not a trapezoid. Although both share a similar shape, a kite has two pairs of adjacent sides that are equal, while a trapezoid has only one pair of parallel sides.


Both Trapezoids and Rhombuses begin as quadrilaterals, but their unique characteristics make them different. While a trapezoid has one pair of parallel lines and no sides that are equal to each other, a rhombus has four equal sides and two pairs of parallel lines. Understanding the differences and similarities can help in identifying a shape correctly, and choosing the right shape for a particular purpose.