Sketch tool
Midpoint
Constrain a supported point to the midpoint of a straight line.
Purpose
Constrain a supported point to the midpoint of a straight line.
Where to find it
While editing a sketch, open Constraints and choose Midpoint.
Selection
- Tap an endpoint or circle center first, then tap the target line.
Steps
- Select the point.
- Select the line and confirm the point moves to its middle.
Options
Result
A Midpoint constraint keeps the point centered as the line changes and preserves any edges already joined at that point. A relationship that would collapse the target line is rejected without changing the sketch.
Editing
Use Manage Constraints in a relationship constraint panel and delete Midpoint to move the point independently.
Troubleshooting
The point cannot reach the midpoint.
Remove fixed, coincident, or dimensional constraints that prevent the point or line from moving.