| A | B |
| obtuse angle | angle whose measure is greater than 90 degrees and less than 180 degrees |
| ordered pair | pair of numbers used to locate and describe points in the coordinate plane in the form (x, y) |
| polygon | closed 2-dimensional figure, made up of segments which intersect only at the segment endpoints |
| prime factor | all the factors of a quantity that are divisible by the number 1 and itself |
| quadrant | 1 of the 4 sections into which the coordinate plane is divided by the x and y axis |
| range | difference between the greatest and least value in a set of data |
| ratio | comparison of 2 quantities by division that can be expressed as a to b, or a:b, a/b |
| reciprocals | 2 numbers whose product is equal to 1 |
| regular polygon | convex polygon which is equiangular and equilateral |
| right angle | angle whose measure is 90° |
| square root | 1 of the 2 equal factors of a number |
| supplementary angles | 2 angles whose measures have a sum of 180 degrees |
| volume | measure of the capacity of a 3-dimnesional figure (measured in cubic units) |
| x-intercept | coordinate at which the graph of a line intersects the x-axis |
| y-intercept | coordinate at which the graph of a line intersects the y-axis |
| complementary angles | any 2 angles whose measures have a sum of ninety degrees |
| cube root | 1 of only 3 equal factors of a given number |
| improper fraction | fraction in which the numerator is greater than the denominator |
| irregular polygon | polygon whose interior angles are not equal and/or its sides are not equal in length |
| lowest common denominator | least common multiple of the denominators of every fraction in a given collection of fractions |
| mean | measure of center where the sum if a set of number is divided by the number of elements in the set (also called average) |
| median | measure of center that identifies a value such that half the data is above the value and half the data is below the value when the data is listed in order |
| mode | measure of center that is the value or values that occur most frequently in a given set of numbers |