 # Basic Geometry Formulas

Here is the list of geometry formulas for different geometric shapes such as flat 2D shapes and 3D shapes like spheres, cones, and prisms.

Geometry deals with the different aspects of various shapes and figures. In everyday life, we apply geometry when determining the distance we have to walk from one place to another, putting together a piece of do-it-yourself furniture, or deciding whether the leftover food fits a container or not. If your student or child is new to geometry, all the shapes and formulae can be confusing. This geometry formula chart will help them see and understand instead of memorizing

## Area and Perimeter of a Circle Area of a Circle = πr2
Perimeter of a Circle = 2πr

## Area and Perimeter of a Right Triangle Area of a Right Triangle =12 ab
Perimeter of a Right Triangle = a + b + c

## Area and Perimeter of an Equilateral Triangle Area of an Equilateral Triangle =√3/4a2
Perimeter of an Equilateral Triangle = 3a

## Area and Perimeter of a Square Area of a Square  = a2
Perimeter of a Square = 4a

## Area and Perimeter of a Square​ Area of a Rectangle = ab
Perimeter of a Rectangle = 2a+2b

## Area and Perimeter of a Parallelogram Area of a Parallelogram = bh
Perimeter of a Parallelogram = 2a+2b

## Area and Parameter of a Trapezoid Area of a Trapezoid = 1/2 (b+d)h
Perimeter of a Trapezoid = a+b+c+d

## Area and Parameter of a Pentagon Area of a Pentagon = 1/2 5ar
Perimeter of a Pentagon = 5a

## Area and Parameter of a Hexagon Area of a Hexagon = 1/2 6ar
Perimeter of a Hexagon = 6a

## Area and Volume of a Sphere Area of a Sphere = 4πr2
Volume of a Sphere = 4/3 πr3

## Area and Volume of a Cylinder Area of a Cylinder = 2πr2+ 2πrh
Volume of a Cylinder =  πr2h

## Area and Volume of a Cube Area of a Cube = 6a2
Volume of a Cube =  a3

## Area and Volume of a Cuboid Area of a Cuboid = 2ab + 2ac + 2bc
Volume of a Cuboid =  abc

## Area and Volume of a Pentagonal Prism Area of a Pentagonal Prism= 5rb + 5bh
Volume of a Pentagonal Prism = 5/2 rbh

## Area and Volume of a Triangular Prism Area of a Triangular Prism = ab + 2ch + 2bh
Volume of a Triangular Prism = 1/2 abh

## Area and Volume of a Cone Area of a Cone = πrs + πr2
Volume of a Cone = 1/3 πr2h

## Area of a Frustrum Area of a Frustrum = πs(r +q) +π(r2 +q2)

## Area and Volume of a Square Pyramid Area of a Square Pyramid = a2 + 2as
Volume of a Square Pyramid =  1 /3 a2h

## Area and Volume of a Tetrahedron Area of a Tetrahedron = √3a2 + 2as
Volume of a Tetrahedron =  a3/6√ 2 All the formulas are compiled in a poster. You can download the poster here.

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