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# perimeter

«perimeter» in Mova's school dictionary: **the length all the way around a shape** — its meaning for a pupil, its sense in the lessons and examples, with 4 sentences of Mova's corpora that use it.

### part of speech

noun (perimeter, perimeters)

### meaning for a pupil

1) The perimeter is the length all the way around a shape. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#m1)

2) The perimeter of a place is its outer edge or border, like the fence around a field. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#m2)

### sense in the lessons

In maths: the distance around a shape: fences, borders, frames; add all the sides. In everyday life: fencing a garden, putting a border on a picture or ribbon around a cake. In stories: guards walk around the perimeter of the castle.

### examples

- Find the perimeter of a square with 5 cm sides. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x1)
- The perimeter of the garden is 40 meters. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x2)
- How much fence is needed for the perimeter? [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x3)
- The rectangle has a perimeter of 30 cm. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x4)
- We put a ribbon around the perimeter of the card. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x5)
- The dog ran along the perimeter of the field. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x6)
- A triangle with sides 3, 4 and 5 cm has a perimeter of 12 cm. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x7)
- Guards patrolled the perimeter of the camp. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/perimeter/#x8)

### note

Add all the sides. Rectangle: 2 × (length + width); square: 4 × side. Trap: perimeter is not area; do not multiply length by width. Perimeter is a length, so its unit is cm or m, not square cm. The perimeter of a circle is called its circumference.

### In the corpora

- [A square has four equal sides: a square with sides of 5 cm has a perimeter of 4 × 5 = 20 cm.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/105-perimeter-of-a-rectangle/2/)
- [The perimeter of a shape is the length all the way round it: add the lengths of all its sides.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/136-perimeter-of-a-triangle/0/)
- [Then the perimeter is 5 + 8 + 8 = 21 cm.](https://md.mova.elamur.ai/free/en/corpora/school/lessons/136-perimeter-of-a-triangle/3/)
- [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/)

### Trees and pragmatics

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