**Axiom** – statement taken 6es evidence.

**Algebraic expression** – a number of numbers, denoted by letters or numbers, and connected by the actions of addition, subtraction, multiplication, division, exponentiation and extraction of the root.

**Abtsissa** (french word). One of the points of Cartesian coordinates. Is the first. It is usually indicated by the symbol “X”. First used by G. Leibniz in 1675 (German scientist).

**Additivity.** Some property of values. He says the following: the value of a certain value corresponding to a full-fledged object is equal to the sum of values of such a magnitude that correspond to its parts in any partition of the full-fledged object into parts.

**Adjunct.** Fully compliant with algebraic complement.

**Axonometry.** One of the ways to image on the plane of spatial figures.

**Algebra.** The part of mathematics that studies the problems and solutions of algebraic equations. The term was first seen in the 11th century. He applied the flies to honey ben-Musa al-Khorezmi (mathematician and astronomer).

**Argument (function).** Variable (independent) by which the function value is determined.

**Arithmetic.** The science that studies actions on numbers. Originated in Babylon, India, China, Egypt.

**Asymmetry.** Absence or violation of symmetry (inverse symmetry value).

**Infinitely large** – more than any predetermined number.

**Infinitely small** – less than any finite.

**Billion.** One thousand million (one with nine zeros).

**Bisector.** A beam having a beginning at the top of the corner (divides the angle into two parts).

**Vector.** The directed segment is straight. One end is the beginning of the vector; the other is the end of the vector. For the first time the term was used by W. Hamilton (Irish scholar).

**Vertical angles.** A pair of angles that has a common vertex (formed due to the intersection of two straight lines in such a way that the side of one angle is a direct continuation of the second).

**Vector** – a value characterized not only by its numerical value, but also by direction.

**Schedule** – a drawing that visually depicts the dependence of one quantity from another, a line that gives a visual representation of the nature of the change in function.

**Hexahedron. Hexagon.** The term was first used by Pappa of Aleksandiysky (ancient Greek scholar).

**Geometry.** The part of mathematics that studies spatial forms and relationships. The term was first used in Babylon / Egypt (5th century BC.).

**Hyperbola.** Unclosed curve (composed by two unbounded branches). The term appeared due to Appolonius of Perm (ancient Greek scholar).

**Hypocycloid.** This is the curve that the point of the circle describes.

**Homotetia.** The arrangement between the figures (similar), in which the straight lines connecting the points of these figures intersect at the same point (this is called the center of the homothety).

**Degree.** Unit of measure for a flat angle. Equal to 1/90 of a right angle. To measure angles in degrees beginning more than 3 centuries ago. For the first time such measurements were applied in Babylon.

**Deduction.** A form of thinking. With its help, any statement is derived logically (based on the rules of modern science of "logic").

**Diagonal.** A line segment that interconnects the vertices of a triangle (they do not lie on one side). For the first time used the term Euclid (3rd century BC).

**Discriminant** An expression composed of the quantities that define the function.

**Fraction** – A number composed of an integer number of units of one. It is expressed by the ratio of two integers m / n, where m is the numerator, showing how many fractions of a unit are contained in a fraction, and n is the denominator, indicating how many shares a unit is divided by.

**Denominator.** The numbers that make up the fraction.

**Golden ratio** – dividing the segment into two parts so that a large part belongs to a smaller one, as the whole segment to a large part. Approximately equal to