In rigid routes, there are three typical types of dimensions pertaining to the route sketch:
- Linear dimension, such as the length of route segments
- Radial dimension, such as bend radius for custom bends in piping routes and normal bends in tubing routes
- Angular dimension, such as angles between directional turns
Dimensions only apply to the route sketch in parametric regions. Auto regions always dynamically update to assembly changes so the number of segments typically varies from the new solution. They do not involve dimensions until the Convert to Sketch command is applied.
Auto-Dimension on the context menu enables you to switch whether to automatically dimension the subsequent route sketch. To place and edit dimensions manually, click Route tab 
Constrain panel Dimension or double-click an existing dimension in place.
General Dimension
As in Autodesk® Inventor®, dimensions on the route sketch can be categorized into two types: normal sketched dimension (driving dimension) and driven dimension. Normal sketched dimensions are used to drive the route geometry. For instance, sketched route segments are manually created using a specified dimension. Driven dimensions are enclosed in parentheses as displayed in the graphics window and allow route geometry to respond to associated changes dynamically.