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- Dictionaryperimeter/pɪˈrɪmɪtə/
noun
- 1. the continuous line forming the boundary of a closed geometrical figure: "the perimeter of a rectangle" Similar
- 2. an instrument for measuring the extent and characteristics of a person's field of vision.
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What is a perimeter in geometry?
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The perimeter is the distance all the way around the outside of a 2D shape. To work out the perimeter, add up the lengths of all the sides.
- What Are The Parts of a Circle
All circles have a circumference, diameter and radius. They...
- What Are The Parts of a Circle
Perimeter is the outer edge of an area or the length of the outer edge of a shape. Learn how to use perimeter in different contexts, such as geometry, basketball, and irrigation, with examples and collocations.
- What Is A perimeter?
- How to Find Perimeter
- Real – World Applications
- Solved Examples on Perimeter
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In geometry, the perimeter of a shape is defined as the total length of its boundary. The perimeter of a shape is determined by adding the length of all the sides and edges enclosing the shape. It is measured in linear units of measurement like centimeters, meters, inches, or feet. Let’s try to calculate the perimeter of the following shape: Perime...
Perimeter of a Regular Shape
We know that the length of each side of a regular polygon is the same. Therefore, Perimeter of regular polygon = sum of all its sides = number of sides ✕ length of one side. For example, look at the given regular pentagon. The perimeter of the given regular pentagon can be calculated as follows: Number of sides = 5 Length of one side = 4 cm Therefore, Perimeter = number of sides ✕ length of one side = 5 ✕ 4 = 20 cm The given table summarizes the formulas to find the perimeter of some regular...
Perimeter of An Irregular Shape
Since the sides of an irregular polygon may not all be the same in length, we use the general formula to find the perimeter of an irregular shape. Therefore, Perimeter of irregular polygon = sum of all sides.
We often use the concept of perimeter in real life. For example, when putting up Christmas lights around the house or when we want to put a fence around the backyard, we find its perimeter to know the length of wire we will need.
Example 1: What is the perimeter of the given figure? Solution: We know that the perimeter of a triangle is given by Perimeter = a + b + c, Where a, b, c = length of three sides. Therefore, For the given triangle, Perimeter = 5 cm + 4 cm + 3 cm = 12 cm Example 2:Calculate the perimeter of the following figure. Solution: The given shape is an irregu...
Learn how to find the perimeter of regular and irregular shapes using linear units of measurement. Explore the formulas, examples, and practice problems on perimeter with interactive games and activities.
Perimeter is the boundary of a closed plane figure or the length of such a boundary. Learn more about the word history, synonyms, examples, and related phrases of perimeter.
Learn what perimeter means and how to calculate it for different shapes. See the perimeter of a rectangle, a circle and other examples with diagrams and formulas.
Perimeter definition: a line bounding or marking off an area. See examples of PERIMETER used in a sentence.
Perimeter. Perimeter is the distance around a two-dimensional shape. Example: the perimeter of this rectangle is 7+3+7+3 = 20. Example: the perimeter of this regular pentagon is: 3 + 3 + 3 + 3 + 3 = 5×3 = 15. The perimeter of a circle is called the circumference: Circumference = 2 π × radius.
