Geometric Constraints - Parametric Design

Lock the relationship between geometries, like line, polyline, circle, arc

Auto Constrain

Parametric tab > Geometric panel > Auto Constrain

Automatically apply constraints on the objects to keep the origin shape

Specify Geometric Constraints

Linear
For line, polyline segments
A polyline segment can be selected separately

Radius
For circle, arc, ellipse

Horizontal and Vertical Constraints

Keep linear objects horizontal or vertical
Can also be use with text, ellipse

Parallel and Perpendicular
Parallel: Forcing 2 linear objects to take on the angle of 1st object
Perpendicular: Constrains the 2nd object to rotate 90 degrees from the angle of 1st object

Tangent
Constrains an object to the tangent of a radial object

At lease 1 object must be circle, arc or ellipse

Smooth
Ensure the selected object continue the same curvature between a spline and other linear object

Coincident
Constrains 2 points to remain together

Concentric
Constrains 2 radial objects, like circle, arc, ellipse

Collinear
Constrains 2 lines within the same path

Equal
Constrains 2 linear objects maintain the same length
Constrains 2 radial objects maintain the same radius

Fix
Constrains a point on an objects to remain fix to a specific location

Symmetrical
Constrains 2 points on objects or forces objects to be symmetrical about a symmetry line