| A | B |
|---|
| Acute | an angle less than 90 |
| Right | a 90 degree angle |
| Obtuse | an angle more than 90 |
| Straight | a 180 degree angle |
| Complementary | 2 angles that add up to 90 |
| Supplementary | 2 angles that add up to 180 |
| Vertical | 2 angles across from each other |
| Parallel | 2 lines that never intersect |
| Perpendicular | 2 lines that form a 90 degree angle |
| Dilation | smaller or larger |
| Translation | slide |
| Reflection | a mirror image |
| Rotation | to turn or spin |
| Perimeter | the distance around |
| Area | the space inside a flat figure |
| Volume | the space inside a 3D figure |
| Surface Area | the total area of all faces |
| Similar figures | figures with the same shape |
| Circumference | the distance around a circle |
| Congruent | figures with the same size and shape |
| Mean | the average |
| Median | the middle number |
| Mode | the nimber that occurs most |
| Range | the highest minus the lowest |
| Equation | mathematical sentence with = |
| Inequality | mathematical sentence with > or < |
| Expression | part of an equation (an unfinished equation) |
| Commutative | 3+5=5+3 |
| Associative | 2+(3+5)=(2+3)+5 |
| Distributive | 2(3x+5)=6x+10 |
| Identity of addition | 5+0=5 |
| Identity of multiplication | 3(1)=3 |
| Mult. property of zero | 9(0)=0 |
| Domain or Independent variable | x |
| Range or dependent variable | y |
