Perimeter of a rectangle |
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AB = DC = width = w AD = BC = h = height ExampleABCD is a rectangle of width w = 8 cm and of height h = 4 cmPerimeter P of the rectangle = 2 x (w + h) = 2 x (8 + 4) = 2 x 12 = 24 cm Calculate the perimeter of a rectangle |
Definition of a rectangleA rectangle is a quadrilateral which has its 4 right angles. It is any shape with four sides and four right angles (90°).A rectangle is a 4-sided flat shape with straight sides where all angles are right angles. To calculate the perimeter of a rectangle, add the lengths of the rectangle's four sides. The perimeter of a rectangle is the total length of all the sides of the rectangle. The perimeter of a rectangle is twice the sum of its width and height. Properties of a rectangleA rectangle has its diagonals of the same length which intersect in their middle.A rectangle has its opposite sides 2 to 2 parallel and of the same measure. All the angles are right angles and are equal to 90°. The angles of a rectangle are all congruent, they have the same size and the same measure. To go furtherA rectangle is a parallelogram. Indeed its sides are parallel. A rectangle is a parallelogram with four right angles.A rectangle is a trapezoid. Indeed a trapezoid is a quadrilateral of which two sides are parallel. The perimeter formula for a rectangle states that P = 2 x (w + h), where P represents perimeter, w represents width and h represents height. In a rectangle, the opposite sides are equal. So the perimeter of a rectangle is twice the width plus twice the height. |