Geometry is all about shapes, size, lines, etc. We need geometry formulas to find the length, area, perimeter, volume of all the different shapes. Below are some of the common geometry shapes:

Geometry Shapes

Here some of the basic geometry formulas given below:

Area Perimeter Volume Surface Area
Square: side$^2$

Rectangle:
length $\times$ width

Parallelogram:
base $\times$ height

Triangle:
base $\times$ height

Trapezoid:
height $\times$ $\frac{(base_1 + base_2)}{2}$

Circle:
pi $\times$ radius$^2$ 
Square: 4 $\times$ side

Rectangle: 2 $\times$ (length + width)

Parallelogram: 2 $\times$ (side$_1$ + side$_2$)

Triangle: side$_1$ + side$_2$ + side$_3$

Trapezoid: height $\times$ $\frac{(base_1 + base_2)}{2}$

Circle: 2 $\times$ pi $\times$ radius
Cube: side$^3$

Cylinder: pi $\times$ radius$^2$ $\times$ height

Cone: $\frac{1}{3}$ pi $\times$ radius$^2$ $\times$ height

Rectangular
Prism:
 side$_1$ $\times$ side$_2$ $\times$ side$_3$

Pyramid: $\frac{1}{3}$ $\times$ (base area) $\times$ height
Cube: 6 $\times$ side$^2$

Sphere: 4 $\times$ pi $\times$ radius$^2$

Cylinder: 2 $\times$ pi $\times$ radius$^2$ + 2 $\times$ pi $\times$ radius $\times$ height

Below you will find the list of all the geometry formulas.