| A | B |
|---|
| line of symmetry | a line, real or imaginary, that divides an object into two congruent parts |
| mean | the average of numbers given |
| median | in a given set of numbers arranged by ascending or descending value, the number which is in the exact middle |
| midpoint | a point on a line segment that divides the segment into two congruent parts |
| mixed number | a number expressed as an integer and a fraction |
| mode | in a set of numbers, its the number that appears the most |
| numerator | in a fraction, the number which appears above the fraction bar, the top number |
| obtuse | an angle with a measure between 90 and 180 degrees |
| octagon | a polygon with 8 sides |
| parallel | when two lines, segments, or rays travel in such a way that they will never intersect |
| parallelogram | a quadrilateral with both pairs of opposite sides pararrel to one another and each side is equal in length to the side opposite it |
| pentagon | a polygon with 5 sides |
| peremeter | the total length of the outside border of an object |
| perpendicular | when two lines, segments, or rays intersect and form right angles |
| polygon | a closed two-dimensional figure of three or more sides formed by segments that meet only at their endpoints |
| prime number | a number that is not evenly divisible by any number other than itself and one |
| probability | the likelihood that an event will occur |
| product | the solution to an equation involving multiplication |
| proper fraction | any fraction with the numerator less than or equal to the denominator |
| quadrilateral | any polygon with four sides |
