Geometry Expressions will calculate the slope of lines, segments, polygon sides, or vectors with these steps:
| 1. | Select  a line type. |
| 2. | Click the tab to switch from Real to Symbolic output or vice versa. |
| 3. | Click the Slope tool in the Calculate toolbox or select Slope from the Calculate menu. |
The equation for the slope with real or symbolic terms appears in the diagram.