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# rectangle

«rectangle» in Mova's school dictionary: **a flat shape with four straight sides and four square…** — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

### part of speech

noun (rectangle, rectangles)

### meaning for a pupil

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://md.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://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#m2)

### sense 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://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x1)
- Find the perimeter of the rectangle. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x2)
- The area of the rectangle is 24 square meters. [tree →](https://md.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://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x4)
- A door is shaped like a rectangle. [tree →](https://md.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://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x6)
- A rectangle has four right angles. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x7)
- Fold the rectangle along its line of symmetry. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/#x8)
- Draw a rectangle on squared paper and count the squares inside. [tree →](https://md.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).

### In the corpora

- [A rectangle covered by rows of unit squares has length × width of them.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/106-area-of-a-rectangle/1/)
- [A rectangle 6 cm long and 4 cm wide holds 4 rows of 6 squares: 6 × 4 = 24 square centimeters.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/106-area-of-a-rectangle/2/)
- [Some problems need two steps: first the area of a rectangle, then a fraction of that area.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/110-fractions-and-shapes-review/0/)
- [The perimeter of a rectangle is twice the length plus twice the width, so half the perimeter is length + width.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/146-area-from-perimeter/0/)
- [Cut it into two rectangles instead, 10 by 5 and 6 by 3: 50 + 18 = 68, the same.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/148-composite-shapes/2/)

### Trees and pragmatics

[Every meaning and example of «rectangle» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/rectangle/), each sentence with its dependency tree and frames.