Geometry: Perimeters of Polygons

Perimeters of Polygons - square, rectangle, parallelogram, triangle, rhombus, trapezoid

The perimeter of a polygon is the sum of the lengths of its sides.

See also area of circles, cicumference of circles.

Perimeters of Squares

Perimeter of a square = s + s + s + s = 4s

Perimeters of Rectangles

Perimeter of a rectangle = l + l + w + w = 2(l + w)

Perimeters of Parallelograms

Perimeter of a parallelogram = l + l + w + w = 2(l + w)

Perimeters of Triangles

Perimeter of a triangle = a + b + c

Perimeters of Rhombus

Perimeter of a rhombus = s + s + s + s = 4s

Perimeters of Trapezoids

a is parallel to b

Perimeter of a trapezoid = a + b + c + d

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