[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/rectangle/)

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# rectangle

noun (rectangle, rectangles)

«rectangle» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A rectangle is a flat shape with four straight sides and four square corners (right angles). Its opposite sides are equal and parallel. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#m1)
2. A square is a special rectangle with all four sides equal. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#m2)

### In the lessons

In maths: a shape with length and width; problems find its perimeter or area; arrays and area models use rectangles. In everyday life: doors, books, phone screens, sports fields and tables are rectangles. In art: drawing with a ruler.

### Examples

- A rectangle is 8 cm long and 5 cm wide. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x1)
- Find the perimeter of the rectangle. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x2)
- The area of the rectangle is 24 square meters. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x3)
- A rectangle has a length of 10 and a width of 4. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x4)
- A door is shaped like a rectangle. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x5)
- Every square is a rectangle, but not every rectangle is a square. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x6)
- A rectangle has four right angles. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x7)
- Fold the rectangle along its line of symmetry. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x8)
- Draw a rectangle on squared paper and count the squares inside. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x9)

### Note

Area = length × width; perimeter = 2 × (length + width). Trap: the question word (area or perimeter) decides which, not the shape. Hidden numbers: 4 sides, 4 right angles (90° each), 2 lines of symmetry (a square has 4). Area is in square units (cm²), perimeter in units (cm).

## On Mova

- [Trees and pragmatics of «rectangle» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«rectangle» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/rectangle.html) on Mova free.