Formulary : Maths - Geometry

Maths

Rectangle ▭

A rectangle is a basic shape which has four right angles (90°).

Definitions:

a: Edge Length a
b: Edge Length b
d: Diagonal
U: Perimeter
A: Area

Perimeter of a Rectangle

The perimeter U is the total length of all 4 sides.

${\color{blue} {U}} = 2 \times {\color{red} {a} } + 2 \times {\color{OliveGreen} {b} } = 2 \times \left( {\color{red} {a} } + {\color{OliveGreen} {b} } \right)$

U = Perimeter

a = Edge Length a

b = Edge Length b

Area of a Rectangle

The region inside a rectangle.

${\color{OliveGreen} {A}} = {\color{red} {a} } \times {\color{blue} {b} }$

A = Area

a = Edge Length a

b = Edge Length b

Pythagorean Theorem

$d=sqrt(a^2+b^2)$

d = Diagonal

a = Edge Length a

b = Edge Length b

$a=sqrt( d^2-b^2 )$

a = Edge Length a

d = Diagonal

b = Edge Length b

$b=sqrt( d^2-a^2 )$

b = Edge Length b

d = Diagonal

a = Edge Length a

Formulary: Maths - Geometry - Rectangle ▭

Rectangle ▭

Definitions:

Perimeter of a Rectangle

Area of a Rectangle

Pythagorean Theorem