| A | B |
| absolute value | distance from zero on a number line |
| acute angle | angle with less than 90 degrees |
| area | length x width |
| adjacent angles | angles that share a common vertex and common side |
| average | the number found by dividing the sum of a group of numbers by the number of addends |
| circle | a closed figure in which every point is the same distance from a given point called the center |
| coefficient | a value by which a variable is multiplied |
| decagon | a polygon with 10 sides |
| difference | subtract |
| dividend | the number that is divided in a division problem |
| denominator | the number below the bar in a fraction |
| numerator | the number above the bar in a fraction |
| diameter | any chord that passes through the center of the circle, all the way across a circle |
| radius | half of a circle |
| degree | a unit used to measure angles |
| equation | a mathematical sentence that uses an equal sign to show that 2 expressions are equal |
| estimate | about how much or how many, close to the exact amount |
| even number | a whole number that is a multiple of 2, can be divided by 2 |
| evaluate | to calculate the numerical value of, solve |
| exponent | the number in a power that tells how many times the base is used as a factor or is multiplied |
| expression | a number, a variable or any combination of numbers variables, operations signs, no equal sign |
| irrational number | non=terminating, non-repeating decimals that cannot be expressed as a ration of 2 integers |
| integers | set of positive whole numbers and their opposites (negatives) and 0 |
| improper fraction | a fraction in which the numerator is greater than the or equal to the denominator |
| mean | average |
| median | when numbers are ordered least to greatest, the number in the middle |
| mode | the number tha occurs most often in a set of data |
| mixed number | a number that is the sum of a whole number and a fraction |
| number line | a line on which real numbers are assigned points |
| obtuse angle | an angle with a measurement greater than 90 degrees |
| octagon | a polygon with 8 sides |
| odd number | a whole number that is not a multiple of 2 |
| parallel lines | lines that are in teh same plane and do not intersect, the distance between the lines is the same everywhere |
| per | each |
| percent | per hundred |
| perpendicular | two lines or line segments that intersect or meet to form right angles |
| point | an exact location in space, represented by a dot |
| positive numbers | numbers that are greater than zero |
| probability | the likelihood of an event occurring |
| product | the answer in a multiplication problem |
| ratio | a comparison of 2 numbers by division |
| range | the difference between the greatest and least numbers in a set of data |
| term | a number in a sentence |
| variable | in an algebraic expression, a letter or symbol that represents a number |