| A | B |
|---|
| Mean | The average |
| Median | The middle number when the data is ranked |
| Mode | The data piece that occurs the most often |
| Range | High - Low |
| High standard deviation | Data is spread out |
| Low standard deviation | Data is close together |
| Complementary angles | Angles whose sum is 90 |
| Supplementary angles | Angles whose sum is 180 |
| Biased | Unfair |
| Good sample | Lots of people and lots of variety |
| Percent of increase | change/original |
| Slope | (y2-y1)/(x2-x1) |
| Midpoint | ((x1 + x2)/2, (y1 + y2)/2) |
| Absolute value of -12 | 12 |
| (-5)^2 | 25 |
| To graph y = 5x - 2, | start at -2 on the y-axis |
| For 3 lengths to form a triangle, | the two shorts must beat the long. |
| For 3 lengths to form a right triangle, | a^2 + b^2 must equal c^2 |
| sin A | opp/hyp |
| cos A | adj/hyp |
| tan A | opp/adj |
| Parallel lines | lines in the same plane that do not intersect |
| Perpendicular lines | lines that intersect to form a right angle |
| Isosceles triangle | A triangle with two congruent sides |
| A polygon with 5 sides | Pentagon |
| A polygon with 6 sides | Hexagon |
| A polygon with 8 sides | Octagon |
| Sum of the angles in a triangle | 180 |
| Sum of the angles in a quadrilateral | 360 |
| Number of faces on a cube | 6 |
| Number of vertices on a pentagonal prism | 10 |
| To find a missing length in a right triangle, | use the Pythagorean Theorem |
| 6! | 6*5*4*3*2*1 |
| If f(x) = 3x + 4, f(5) = | 19 |
| 3, 6, 12, 24, ____ | 48 |
| 20, 13, 6, -1, _____ | -8 |
| Cube root of 27 | 3 |
| Distance on the number line from -3 to 8 | 11 |
| Sum of the interior angles in a polygon | S = (n-2)180 |
| Perimeter | Distance around a figure |
| Scalene | A triangle with no sides congruent |
| Equilateral | A triangle with 3 congruent sides |
| Congruent | "The same as" |
| Bisect | Cut in half |
