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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

- Download a poster with all the basic geometry formulas
- Area and Perimeter of a Circle
- Area and Perimeter of a Right Triangle
- Area and Perimeter of a Scalene Triangle
- Area and Perimeter of an Equilateral Triangle
- Area and Perimeter of a Square
- Area and Perimeter of a Rectangle
- Area and Perimeter of a Parallelogram
- Area and Parameter of a Trapezoid
- Area and Parameter of a Pentagon
- Area and Parameter of a Hexagon
- Area and Volume of a Sphere
- Area and Volume of a Cylinder
- Area and Volume of a Cube
- Area and Volume of a Cuboid
- Area and Volume of a Pentagonal Prism
- Area and Volume of a Triangular Prism
- Area and Volume of a Cone
- Area of a Frustrum
- Area and Volume of a Square Pyramid
- Area and Volume of a Tetrahedron

## Download a poster with all the basic geometry formulas

## 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 =1⁄2 ab

Perimeter of a Right Triangle = a + b + c

## Area and Perimeter of a Scalene Triangle

Area of a Scalene Triangle =1⁄2 bh

Perimeter of a Scalene 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 Rectangle

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 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

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