| Acute Triangle | All angles are acute angles. |
| Diameter | Is any line segment that passes through the center of a circle and has its endpoints on the circle. |
| Intersecting lines | Lines that cross each other. |
| Line of Symmetry | The fold line. |
| Obtuse Triangle | One angle is an obtuse angle. |
| Quadrilateral | Four sided figure. |
| Triangle | A three sided figure. |
| Vertex | The point where three edges meet. |
Drag corresponding items onto each other to make them disappear.
Start Game