**FACES **- It is the polygons that delimit a solid.

**FACTOR** **-** The integers multiplied in a multiplication are the factors. In the equation 3 × 2 = 6, 3 and 2 are the factors of 6.

**FACTORIZATION** - Factor operation (eg breaking a number into prime factors).

**FACTORIAL **(!) - The product is a number for all integers before it, until it reaches 1. Example: 6! = 6.5.4.3.2.1.

**GEOMETRIC FIGURE - **A drawing serves to represent several mathematical notions. A geometric figure can have dimension: 0, 1, 2, 3,…, n.

**FLAT FIGURE - **It is a two-dimensional figure, such as circle, square, pentagon, trapezoid, etc.

**FOCUS - **Fixed point (s) used to define a conic.

**SPACE FORM ** - Geometric figures having three dimensions; Geometric solids.

**FORMULA** - Expression that indicates, in mathematical language, the calculations that must be performed to obtain a certain result.

**EULER FORMULA - **In a polyhedron it is found that F + V = A + 2. Example: In the cube there are 6 faces and 8 vertices, so the number of edges will be 12.

**FRACTION** - Represents the parts of a whole or a set, the ratio of two integers or a division. In common language, fraction means part. Split, apportion.

**DECIMAL FRACTION** - A fractional number that expresses a decimal form. As for example 2.1 or 9.56.

**Irreducible Fraction** - A fraction where the numerator and denominator do not have a common factor greater than 1. Fraction 3/4 is irreducible, but 5/25 is not.

**ORDINARY FRACTION - **It is the fraction that is not decimal. The 1/4 fraction is ordinary.

**SIMPLIFIED FRACTION - **See irreducible fraction.

**EQUIVALENT FRACTIONS - **They are fractions that represent the same amount. Fractions 1/2, 2/4 and 8/16 are equivalent.

**Inverse Fractions** - Two fractions whose product is 1. Fractions 5/3 and 3/5 are inverse, as 5 / 3.3 / 5 = 1.

**FREQUENCY - **The number of times a given event occurs within a given time frame.

**RELATIVE FREQUENCY** - Is the percentage of an event in the sum of all events in a sample.

**OCCUPATION -** It is a univocal correspondence between two sets in which each element of the first set corresponds to one and only one element of the second.

**AIM FUNCTION - **Polynomial function of degree 1.

**BIJECTOR FUNCTION - **Function that is injector and injector.

**CIRCULAR FUNCTION - **Periodic functions referenced in the unit circle. Example: Sine, Cosine, Tangent, etc.

**CONSTANT FUNCTION - **A function is constant over a range if for any x_{1} and x_{2} of this interval f (x_{1}) = f (x_{2}), or, to put it another way, zero degree polynomial function.

**GROWING FUNCTION** - A function is increasing by a range if for any x_{1} and x_{2 }of this interval f (x_{1}) <f (x_{2}).

**INCREASING FUNCTION -** A function such that for any values a> b in your domain you have f (a) <f (b).

**INJECTOR FUNCTION -** Function for which for any values of x_{1} and x_{2}, f (x_{1}) is different from def (x_{2}).

**INVERSE FUNCTION -** A function g is the inverse of a function f if it is bijective and for f (x) = y, g satisfies g (y) = x, that is, g undoes the transformation of f.

**LINEAR FUNCTION -** Polynomial function of degree 1 with the linear coefficient equal to zero.

**Logarithmic Function - **The inverse function of an exponential function. So if we have y = a^{x} the logarithmic function will be x = log_{The}y, where a is the so-called base.

**POLINOMIAL FUNCTION** - Function that has the form of a polynomial: f (x) = A_{0} x^{0} + A_{1} x^{1} + A_{2} x^{2} +… + A_{no} x^{no}.

**QUADRATIC FUNCTION** - Second degree polynomial function.

**OVERLAY FUNCTION - ** A function is overpowering if the image set of the function is equal to the contradiction.

**PERIODIC FUNCTIONS **- Functions whose values are repeated at each interval (period). For example the trigonometric functions.

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