| A | B |
|---|
| Perpendicular | two lines that cross at right angles |
| Quadrilateral | a shape with four sides |
| Parallel | two lines that never cross |
| Rectangle | quadrilateral with two equal sides |
| Raght Angle | 90 degree angle / paper fits in corner |
| Obtuse Angle | larger than a right angle |
| Acute Angle | smaller than a right angle |
| Sphere | solid round object |
| Cylinder | solid round object with a defined top and bottom |
| Area | The space an object takes up |
| Perimeter | The outside measurement of an area |
| Vertex | Point where two angles meet |
| Adjacent | next to or touching |
