| A | B |
| angle | a geometric figure formed by two rays called sides having a common endpoint called the vertex |
| chord | a line segment whose endpoints lie on a circle |
| circumference | the distance around a circle |
| coordinate plane | a grid formed by two axes that intersect at the origin |
| denominator | the number of same-size parts in a whole or set |
| diameter | a chord that passes through the center of a circle |
| elasped | the amount of time that passes between two points in time |
| equally likely | two events with the same probability of occurence |
| expression | a mathematical phrase that represents a quantity; may contain variables, numbers and/or operations |
| factor | a number that is multiplied by another number to find a product |
| frequency | the number of times an outcome occurs |
| line plot | shows the spread of data and each piece of data represented by an X |
| greatest common factor | the largest number that divides evenly into two or more numbers |
| intersecting lines | lines that meet or cross in exactly one point |
| kite | a quadrilateral with two pairs of adjacent sides congruent but not four congruent sides |
| least common denominator | least common multiple of two or more denominators |
| least common multiple | the smallest multiple that each of two or more numbers share |
| likelihood (of an event) | the chance or probability that an event occurs |
| line graph | a graph using line segments to connect the graphed data points |
| mean | a measure of central tendency; the arithmetic average; a mathematical representation of the typical value of a series of numbers, computed as the sum of all numbers in the series divided by the count of all numbers in the series |
| median | a measure of central tendency; in a set of ordered data, the middle value |
| metric measurement system | a system of measurement based on multiple of tens; basic units are meters (length), gram (mass), and liter (volume or capacity) |
| mode | a measure of central tendency; the value (s) that occur most often |
| numerator | a representation of the number of same-size parts being considered in terms of the whole |
| ordered pair | identifies a location in a coordinate plane (i.e., (3,5)) |
| parallel lines | coplanar lines that do not intersect |
| parallelogram | a guadrilateral with both pairs of opposites sides parallel |
| perpendicular lines | lines that intersect to form right angles |
| place value | the value a digit represents depending on its place in the number (tenths, hundredths, thousandths) |
| plane | described as a flat surface that extends infinitely in all directions; has two dimensions |
| polygon | a two-dimentional, simple, closed geometric figure that has line segments as sides |
| quadrant | one of four portions into which a plane is divided by horizontal and vertical axes |
| radius | a line segment from the center of a circle to any point on the circle |
| range (of a set of data) | a measure of variation; the difference between the greatest and least values in a data set |
| rational number | any number that can be written as a ratio (fraction,decimal) |
| rhombus | a parallelogram with all sides congruent |
| trapezoid | a quadrilateral with exactly one pair of parallel sides |
| tree diagram | a organized list of all possible outcomes for an event |
| triangle | a polygon with tree sides |
| variable | a symbol that represents an unknown quantity |