# Plural of Rhombus: Mastering English Grammar

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Rhombus is a geometric shape that has four equal sides, and its opposite sides are parallel. It’s a shape that is often used in mathematics and geometry, but it’s also a word that is used in English grammar. However, when it comes to using the plural form of rhombus in English, many people get confused. In this article, we will discuss plural of rhombus and how it is uses in sentences.

Plural of Rhombus

Contents

## Definition and Plural of Rhombus

A rhombus is a four-sided shape with all sides equal in length. It is also known as a diamond shape. A rhombus has two pairs of parallel sides and opposite angles are equal. However, unlike a square, the angles of a rhombus are not always right angles.

The plural of rhombus can be either “rhombuses” or “rhombi”. Both are considered correct, but “rhombuses” is more commonly used in modern English. The word “rhombi” is derived from the Latin word “rhombus” and is the plural form used in classical Latin. However, over time, “rhombuses” has become the preferred plural form in English.

Here are some examples of how to use the plural forms of rhombus in sentences:

• There are several rhombuses on the wall.
• The floor is covered in rhombuses.
• The artist used different colors to paint the rhombi.

In summary, a rhombus is a four-sided shape with all sides equal in length. The plural form of rhombus can be either “rhombuses” or “rhombi”, with “rhombuses” being the more commonly used form in modern English.

## When to Use Rhombus and Plural of Rhombus

A rhombus is a parallelogram with four equal sides. It is also known as a diamond or a rhomb. The plural of rhombus can be either rhombi or rhombuses. Both are considered correct, but rhombuses is more commonly used.

We use the singular rhombus when we want to refer to one rhombus. For example: The kite that I flew yesterday was in the shape of a rhombus. In this example, there is only a kite, it’s in the shape of rhombus, so we use the singular form.

When using the word rhombus in a sentence, it is important to use the correct plural form. Here are some examples:

• There are multiple rhombi in the design.
• I can see multiple rhombuses on the floor.
• Over there could be more rhombi.

It is also important to note that the word rhombus is a common noun, so it should not be capitalized unless it is at the beginning of a sentence.

Is a square a rhombus? Yes, because a square is just a rhombus where the angles are all right angles. However, not all rhombuses are squares, as they can have any angle between 0 and 180 degrees.

In summary, when using the word rhombus, it is important to use the correct plural form and to remember that a square is a type of rhombus.

## Rhombus and Plural of Rhombus in Sentences

To better understand the concept of the plural of rhombus, it is important to see it in context. Here are a few examples of rhombus and its plural used in sentences:

Singular form:

• The rhombus has four equal sides and opposite angles that are congruent.
• My daughter is learning about geometric shapes in school, and today they are studying the rhombus.
• The artist used a rhombus as the base shape for her abstract painting.

Plural form:

• The quilt had a unique design of colorful rhombuses.
• The floor tiles were arranged in a pattern of interlocking rhombi.
• The math teacher asked the students to draw multiple rhombi on the board.
• The wallpaper showcased a geometric pattern of interconnected rhombuses.

As we can see from these examples, the plural of rhombus is “rhombi,” which is derived from the Latin word “rhombus.” When forming the plural form of the word, you base it on the last letter or last two letters of the singular word form.

In geometry, a rhombus is a special case of a parallelogram where all four sides are equal in length. Opposite sides are parallel, and opposite angles are equal. The diagonals of a rhombus bisect each other at right angles.

## Plural Noun Rules for Regular Nouns

Plural nouns are used to refer to more than one of a particular noun. In English, most regular plural nouns are formed by adding -s or -es to the end of the singular noun.

### Adding -s to the Singular Noun

The most common way to form a plural noun is to add -s to the end of the singular noun. For example:

• One car, two cars
• One book, four books
• One house, three houses

### Adding -es to the Singular Noun

If the singular noun ends in -s, -x, -z, -ch, or -sh, you need to add -es to form the plural noun. For example:

• One box, two boxes
• One bus, three buses
• One quiz, five quizzes

### Singular Nouns Ending in -y

If the singular noun ends in -y and the letter before the -y is a consonant, you need to change the -y to -ies and add -s to form the plural noun. For example:

• One baby, two babies
• One city, four cities
• One fly, six flies

### Singular Nouns Ending in -f or -fe

If the singular noun ends in -f or -fe, you need to change the -f or -fe to -ves to form the plural noun. For example:

• One knife, two knives
• One wolf, five wolves
• One leaf, three leaves

### Singular Nouns Ending in -o

If the singular noun ends in -o, you usually add -s to form the plural noun. However, there are some exceptions where you need to add -es. For example:

• One potato, two potatoes
• One hero, four heroes
• One tomato, five tomatoes

## Plural Noun Rules for Irregular Nouns

When it comes to forming plurals, most nouns in English follow a simple rule of adding “-s” or “-es” to the end of the word. However, there are some nouns that do not follow this rule and have irregular plural forms. In this section, we will discuss the rules for forming plurals of irregular nouns.

### List of Common Irregular Plural Nouns

First, let’s take a look at some common irregular plural nouns:

Singular Plural
Child Children
Foot Feet
Tooth Teeth
Mouse Mice
Goose Geese
Man Men
Woman Women
Person People
Fish Fish (when referring to multiple species)

### Nouns That End in Us

Nouns that end in “-us” usually have a plural form that ends in “-i”. For example:

Singular Plural
Focus Foci
Cactus Cacti
Nucleus Nuclei
Fungus Fungi

### Nouns That End in Is

Nouns that end in “-is” usually have a plural form that ends in “-es”. For example:

Singular Plural
Crisis Crises
Analysis Analyses
Thesis Theses
Diagnosis Diagnoses

### Nouns That End in On and Um

Nouns that end in “-on” or “-um” usually have a plural form that ends in “-a”. For example:

Singular Plural
Criterion Criteria
Phenomenon Phenomena
Bacterium Bacteria
Curriculum Curricula

### Plurals That Are the Same as Singulars

Some nouns have the same form for both singular and plural. For example:

Singular/Plural
Deer Deer
Sheep Sheep
Fish Fish (when referring to a single species)
Aircraft Aircraft
Species Species

### Words That Look Like Plural Nouns but Are Singular Nouns

Some nouns look like they should be plural, but they are actually singular. For example:

Singular
Mathematics
News
Physics
Politics

In conclusion, irregular plural nouns can be tricky, but by following the rules outlined above, you can form the correct plural form of these nouns.

## Plural Nouns vs. Possessive Nouns

When it comes to grammar, understanding the difference between plural and possessive nouns is important. Plural nouns refer to more than one person, place, thing, or idea, while possessive nouns show ownership or a direct connection to something.

One way to form plural nouns is by adding an “s” or “es” to the end of the word, depending on the last letter or sound. For instance, the plural of “rhombus” is “rhombuses.” On the other hand, to form a possessive noun, you typically add an apostrophe and an “s” to the end of a singular noun. For example, “the dog’s bone” shows that the bone belongs to the dog.

It’s important to note that some nouns have irregular plural and possessive forms, and it’s essential to learn them to avoid making mistakes. For instance, “child” becomes “children” in the plural form and “child’s” in the possessive form.

Here are some examples of plural and possessive nouns:

• Plural: cats, dogs, books, pencils, cars
• Possessive: cat’s, dog’s, book’s, pencil’s, car’s

In summary, knowing the difference between plural and possessive nouns is crucial for effective communication in written and spoken language. By understanding how to form and use them correctly, you can avoid confusion and make your writing more clear and concise.

What is the plural form of rhombus?

The plural form of rhombus can be either rhombuses or rhombi.

How do you pluralize rhombus?

To pluralize rhombus, you can use either rhombuses or rhombi. Both forms are considered correct.

Can you use ‘rhombuses’ and ‘rhombi’ interchangeably?

Yes, you can use ‘rhombuses’ and ‘rhombi’ interchangeably. Both forms are considered correct, so you can use whichever one you prefer.

What is the difference between a rhombus and a parallelogram?

A rhombus is a type of parallelogram where all four sides are of equal length. In contrast, a parallelogram is a quadrilateral with opposite sides that are parallel.

What is the shape of a rhombus?

A rhombus is a four-sided shape with all sides of equal length. The opposite angles are equal, and the diagonals bisect each other at right angles.

The plural form of rhombus can be either rhombuses or rhombi.

To pluralize rhombus, you can add either -es or -i to the end of the word. Both forms are considered correct.

The correct way to make rhombus plural can be either rhombuses or rhombi. Both forms are acceptable, so it depends on your preference.