Vikidia currently has 4,381 articles. Improve it!
 Join Vikidia: create your account now and improve it!

# Mathematics

Mathematics is the combination of abstract knowledge resulting from logical reasoning applied to various objects such as man, form, structure, and transformation.

It is also the domain of knowledge that can develop knowledge, as well as the discipline that can be taught.

## Arithmetic

Arithmetic is a branch of math where basic operations are: addition, subtraction, multiplication and division, but also done in mathematical reasoning.

$3+5=8$ is an easy addition to kids of six years in kindergarten.

$7391+3621=11012$ is a medium addition to boys of eleven years in fifth grade.

### Subtraction

$9-4=5$ is an easy subtraction to kids of seven years in first grade.

$50918-41715=9203$ is a medium subtraction to boys of eleven years in fifth grade.

### Multiplication

$6*3=18$ is an easy multiplication to boys of eight years in second grade.

$342*31=10602$ is a medium multiplication to boys of eleven years in fifth grade.

### Division

$15/3=5$ is an easy division to boys of nine years in third grade.

$2187/81=27$ is a medium division to boys of eleven years in fifth grade.

## Geometry

Geometry is a branch of math that studies the geometry forms.

### Trigonometry

Trigonometry is a branch of geometry that studies the triangle.

#### Sinus

The sinus is the opposite hick divided by the hypotenuse.

The cosinus is the adjacent hick divided by the hypotenuse.

#### Tangent

The tangent is the opposite hick divided by the adjacent hick.

The cotangent is the opposite reason of tangent.

#### Secant

The secant is the opposite reason of cosinus.

The cosecant is the opposite reason of sinus.

### Angles

The triangle who the angles are 90°, 60° and 30°, the constants is:

Four sides. The angles are alpha, beta, gamma and tit.

##### Square

Equal angles and equal sides.

##### Rhomboid

Two sides are equal and two angles are equal.

##### Diamond

A rhomboid who your upper angle is smaller than 90.

##### Rectangle

Equal angles and two equal sides.

##### Trapeze

Left and right sides are equal. Upper angles are equal and down angles are equal.

##### Trapezoid

No sides are equal.