| A | B |
|---|
| Angle | 2 rays that share a common endpoint |
| Acute Angle | an angle with less than 90 degrees |
| Obtuse Angle | an angle with more than 90 degrees |
| Straight Angle | an angle with 180 degrees |
| Right Angle | an angle with 90 degrees |
| Polygon | a figure with 3 or more sides |
| Parallel Lines | 2 lines that never meet |
| Perpendicular Lines | 2 lines that intersect in 90 degree angles |
| Perimeter | the distance around a polygon |
| Circumference | the distance around a circle |
| Area | the amount of space inside a closed figure |
| Volume | the amount of space inside a 3-dimensional figure |
| transversal | a line that intersects 2 parallel lines |
| hypotenuse | the long, thin side of a right triangle |
| protractor | a tool used to measure an angle |
| compass | a tool used to draw angles |
