You can use symbolic variables to constrain geometry with an implicit equation. Lines, line segments, polygon sides, vectors and circles and conics can all be constrained with implicit equations.
- Select
the geometry. - Click the Implicit Equation icon
from the Constrain toolbox, or select Implicit Equation from the Constrain menu.
An input window will open next to the geometry you selected. Highlighted in the window is a generic equation for the selected object; for a line, an equation like - XA0+YB0+C0 Y== 0 might appear. You can edit the equation with different variable names or coefficients as you like or enter a totally different equation. For example, we've given the line the equation:
Y=X.
Notice how the line snaps into position after we press enter.
