What is Rectangle?
A rectangle is a 2D shape in geometry, having 4 sides and 4 corners. Its two sides meet at right angles. Thus, a rectangle has 4 angles, each measuring 90 ̊. The opposite sides of a rectangle have the same lengths and are parallel. Two sides are said to be parallel, when the distance between them remains the same at all points.
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Other names of the rectangle
Since all the angles of a rectangle are equal, we also call it an equiangular quadrilateral.
Properties of a rectangle:
It is a flat shape
It has 4 sides (edges)
It has 4 corners (vertices)
It has 4 right angles
Area of a rectangle:
The area of a rectangle is the product of its two adjacent sides
Area of a rectangle = Length × Width
The perimeter of a rectangle is the sum of the length of its four sides. Since parallel sides of a rectangle have the same length, the formula for the perimeter of a rectangle is
Perimeter of a rectangle = Length + Width +Length + Width
=2 length +2Width
=2 (length +Width)
Diagonals of a rectangle:
The line segments that join the opposite corners of a rectangle are called its diagonals. In the given figure, the two diagonals of the rectangle are AC and BD. The diagonals of a rectangle are the same in length.
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Therefore, AC = BD
Rectangle being the most common shape forms a part of our day to day life. Some real-life examples of the rectangle are table tops, books, mobile phones, TV, etc.
Fun FactsAll rectangles are parallelograms, but all parallelograms are not rectangles
The diagonals of a rectangle divide the rectangle into four triangles