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 →

2) The perimeter of a place is its outer edge or border, like the fence around a field. tree →

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 →
• The perimeter of the garden is 40 meters. tree →
• How much fence is needed for the perimeter? tree →
• The rectangle has a perimeter of 30 cm. tree →
• We put a ribbon around the perimeter of the card. tree →
• The dog ran along the perimeter of the field. tree →
• A triangle with sides 3, 4 and 5 cm has a perimeter of 12 cm. tree →
• Guards patrolled the perimeter of the camp. tree →

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.
• The perimeter of a shape is the length all the way round it: add the lengths of all its sides.
• Then the perimeter is 5 + 8 + 8 = 21 cm.
• The perimeter of a rectangle is twice the length plus twice the width, so half the perimeter is length + width.

Trees and pragmatics

Every meaning and example of «perimeter» parsed by Mova, each sentence with its dependency tree and frames.