| A | B |
| difference | answer to a subtraction problem |
| equilateral triangle | 3 sided polygon with all three sides equal in length |
| isosceles triangle | polygon with three sides, two of the sides are equal in length |
| scalene triangle | polygon with three sides, all of the sides are different in length |
| sum | the answer in an addition problem |
| divisibility by 10 | the number must end in a 0 |
| divisibility by 5 | the number will end in a 5 or a 0 |
| multiple | the product of a given whole number and another whole number |
| factor | one of two or more numbers that are multiplied to get a product |
| product | answer to a multiplication problem |
| acute angle | an angle with a measure less than 90 degrees |
| obtuse angle | an angle with a measure of greater than 90 degrees and less than 180 degrees |
| dividend | the number you are dividing INTO |
| divisor | the number you are dividing BY |
| quotient | the answer to a division problem |
| polygon | a closed plane figure made up of three or more lines |
| prime number | a number with two factors, one and itself |
| composite number | a number with three or more factors |
| mean | average, obtained by finding the sum of the pieces of numerical data and then divividing the sum by the number of pieces of data |
| fraction | represent a part of a whole |
| numerator | top number in a fraction, represent the PART of the whole |
| denominator | bottom number in a fraction, represent the number of parts needed to make a WHOLE |
| improper fraction | numerator is greater than the denominator |
| mixed number | a whole number with a fraction |
| equivalent fractions | two or more fractions that are equal in value |
| perimeter | the sum of the lengths of a polygon |
| common factor | a number that is a factor of two or more numbers |
| common multiple | a number that is a multiple of two or more numbers |
| decimal | a symbol that uses a base ten place value system |
| consecutive | following one another in regular order without gaps |
| greatest common factor | The largest factor that two or more numbers have in common. |
| intersecting lines | Two lines that cross each other. Lines intersect at one point |
| parallel lines | Two lines are parallel if they lie in the same plane and they do not intersect. |
| right triangle | A triangle with exactly one right angle. |
| rotation | A transformation that turns a figure about a fixed point at a given angle and a given direction. |
| divisibilty rule for 2 | if the number ends in a 0, 2, 4, 6, or 8, then the number is divisble by 2 |
| line | a series of points that goes in opposite directions forever |
| identity property of addition | any number plus zero equals itself |
| triangle | three sided polygon, sum of the interior angles is 180 degrees |
| percent | out of one hundred |