ABACUS - Instrument for counting and calculation. Calculator with several metal rods, holding balls that can be manipulated, serving to perform mathematical operations.
ABSCISSA - Axis coordinate name x in a two-dimensional Cartesian system.
ADDITION - One of four basic arithmetic operations, used to add one number to another.
ALPHA () - First letter of greek alphabet.
DIGITAL - Symbols used to represent numbers. In our base numbering system 10, there are ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.
LINEAR ALGEBRA - Branch of Mathematics that uses some fundamental concepts and structures, such as: vectors, vector spaces, linear transformations, systems of linear equations and matrices.
Algorithm - A set of rules required to solve a problem or calculation.
ALIQUOT - Percentage with which a certain tax is levied on the value of the taxed object.
HEIGHT - Dimension of a body considered vertically from bottom to top.
SAMPLE - A set chosen to represent a collection or population.
RANGE OF AN INTERVAL - It is the difference between the upper and lower end of the range. Also called gap diameter.
ANGLE - Angle is the joining of two oriented straight line segments (or two oriented straight lines) from a common point. The intersection between the two segments (or half-straight) is called the vertex of the angle and the sides of the angle are the two segments (or half-straight).
ADJACENT ANGLE - Angle with one vertex and one common side. The angles GED and DEF are adjacent.
ACUTE ANGLE - Angle measuring less than 90º and more than 0º.
ANGLE OBTUSE - Angle measuring more than 90º and less than 180 degrees.
Shallow Angle - Angle that measures exactly 180º.
STRAIGHT ANGLE - Angle that measures exactly 90º.
ADDITIONAL ANGLES - Angles whose sum is equal to 90º.
ADDITIONAL ANGLES - Two angles are said to be supplementary when their sum is 180º.
RING (Geometry) - Plane portion delimited by two circles with the same center.
YEAR - Time period comprising 365 days, except the leap year, which has 366 days.
APOTHEM - Perpendicular line segment next to a polygon drawn from its center.
APPROACH - Value obtained by rounding a measure. Example: If we rounded the number 6.851 we would have 6.85.
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