Question | Answer |
Area | The measure (usually in square units) of the interior region of a two-dimensional figure |
Center of Rotation | A fixed point around which a geometric figure is rotated or turned. |
Circumference | The distance around a circle |
Circumference | Formula: 2 π r or π d |
Coefficient | A numerical factor in a term containing variables |
Coefficient | 3xy2 : 2 is an exponent; x and y are variables, 3 is a ______________________ |
Common factor | An integer that is a factor of two or more numbers |
Complementary angles | Any two angles such that the sum of their measures equals 90 degrees. |
Composite number | Any whole number with more than two factors |
Cone | A three-dimensional figure that consists of a circular face (the base), a point not in the plane of the base (the vertex), and a lateral surface that connects the vertex to each point on the boundary of the base |
Congruent figures | Two or more geometric figures that have the same size and shape |
Decagon | A polygon with 10 sides |
Diagonal | A line segment between non-consecutive vertices in a polygon |
Diameter | A cord that contains the center of a circle |
Equilateral triangle | A triangle with three congruent sides and three congruent angles;each angle measures 60º |
Equivalent | Equal in value |
Formula | An equation that shows the relationship between two or more quantities |
Greatest Common Factor | The greatest number that is a factor of two or more numbers |
Heptagon | A polygon with 7 sides |
Hexagon | A polygon with 6 sides |
Hypotenuse | In any right triangle, the side opposite the right angle |
Inequality | A mathematical sentence that compares two expressions that may or may not be equivalent; uses one of these symbols ≠, ≤, ≥, <, > |
Integer | The set of whole numbers and their opposites{… -3, -2, -1, 0, 1, 2 …} |
Irrational Number | A number that cannot be written as the ratio of two integers; when written as a decimal, the digits neither terminate nor repeat |
isosceles triangle | A triangle with at least two congruent sides |
Least Common Multiple | The smallest non-zero number that is a multiple of two or more numbers |
Mean | A measure of central tendency which is affected by all data points (with the possible exception of outliers); calculated by finding the sum of the data values and dividing by the number of data points |
Median | A measure of central tendency that occupies the middle position of a data set in ranked order |
Mode | A measure of central tendency that is the most frequently occurring value |
Measures of Central Tendency | Descriptive statistics that describe the center of the data set;mean, median and mode |
Nonagon | A polygon with 9 sides |
Natural Numbers | The counting numbers; the positive whole numbers; a positive integer |
Octagon | A polygon with 8 sides |
Odd Integer | Any integer that, when divided by 2, does not have an integer as the quotient |
Ordered pair | A pair of numbers used to locate a point in a coordinate plane; the pair is written in the form (x-coordinate, y-coordinate) |
Origin | In a coordinate plane, the point at the intersection of the x- and y-axes;the point (0, 0) |
Outcome | In a probability experiment, the result of an event |
Outlier | Any value in a set of data that is notably farther from the mean than the other data |
Parallelogram | Any quadrilateral with both pairs of opposite sides parallel |
Pentagon | A polygon with five sides |
Percent | Per one hundred; a special ratio in which the denominatoris always 100 |
Perfect Square | Any natural number that can be expressed as a natural number multiplied by itself such as 25 = 5 x 5 |
Perimeter | The distance around a geometric figure |
Perpendicular Lines | Two lines that intersect to form right angles |
Pi | The ratio of the circumference of a circle to its diameter; approximately 227; decimal approximation 3.14 |
Polygon | A simple, closed, plane figure with three or more sides that are line segments |
Polyhedron | A three-dimensional geometric figure with polygonal faces |
Prime Number | A natural number with exactly two factors (itself and one) |
Proportion | A statement of equality between ratios |
Pyramid | A polyhedron with a polygonal base, triangular faces and a vertex |
Pythagorean Theorem | A theorem defining the relationship between the lengths of the three sides of a right triangle;a2 + b2 = c2 where a and b are the lengths of the legs of the right triangle and c is the length of the hypotenuse |
Quadrilateral | A polygon with four sides |
Ratio | A comparison of any two quantities; may be expressed as a : b or a to b or ab |
Rational Numbers | The set of numbers that can be expressed as a ratio of two integers |
Reflection | A transformation in which all points under than transformation are mirrored over a line |
Rhombus | A parallelogram with four congruent sides |
Sample Space | The set of all possible outcomes of an experiment |
Scientific Notation | A standardized way of writing real numbersin the form a x (10 to a certain power) |
Similar | Having the same shape but not necessarily the same size |
Set | A group of numbers, variables, geometric figures or anything else |
Supplementary Angles | Two angles with measures adding to 180º |
Surface Area | The total area of the exterior of a three-Dimensional geometric figure; the lateral area added to the area of the base |
Terms | Parts of an expression separated by + or - signs |
Theoretical Probability | The ratio of the number of expected outcomes |
Transformation | Operations that alter the location or form of a figure |
Translation | A transformation in which a geometric figure Is moved to another location without changing its size (isometry) or orientation |
Trapezoid | A quadrilateral with exactly one pair of parallel sides |
Variable | A symbolic representation used to denote a quantity or expression; in mathematics, an “unknown” quantity that has the potential to change |
Vertical Angles | Angles formed by intersecting lines.These angles have a common vertex and are congruent. |
Volume | The total amount of space inside a three-dimensional object |
Whole numbers | Non-negative integers |