| A | B |
|---|
| Point | Place in space. |
| Line | Set of points never ending a long a straight path |
| Line Segment | A line with 2 end points. |
| Ray | A line with one end point. |
| Angle | 2 rays with the same starting point. |
| Vertex | The point where 2 rays meet. |
| Parallel Lines | Two lines on a flat surface or going in the same direction. |
| Perpendicular Lines | Two lines that cross to form right angles. |
| Polygon | A closed shape made up of line segments that do not cross. |
| Triangle | A polygon with 3 sides. |
| Quadrilateral | A polygon with 4 sides. |
| Pentagon | A polygon with 5 sides. |
| Hexagon | A polygon with 6 sides. |
| Octagon | A polygon with 8 sides. |
| Square | A quadrilateral with 4 equal sides and 4 right angles. |
| A=LW | Area of a rectangle |
| A=SS | Area of a square |
| A=1\2bh | Area of a triangle |
| C=TTd | Diameter of a circle |
| A=TTrr | Radius of a circle |
