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## Constraints |

In the Part-Editor, use the Constraints menu and toolbar to add Constraints.

You can add Constraints

oto a sketch-element

obetween two sketch-elements

obetween a sketch-element and the X-axis or Y-axis

See below: Why cannot I add another Constraint?

See below: How to Delete a Constraint.

See also: Geometry menu and toolbar

Part-Editor > Constraints toolbar is to the right of the graphic-area.

In the graphic-area, you cannot see Constraints that you have added to or between sketch-elements. To DELETE a Constraint: 1.SHIFT+CLICK a sketch-element or a Point* All of the Constraints that apply to the sketch-element or Point* are now in the Selection-Window In the Selection-Window: 2.Right-click the Constraint you want to delete 3.Click Delete element in the shortcut menu * Point, start-Point, end-Point, or center-Point |

Add MERGE-POINTS moves two Points together, and then deletes one of the Points. Add Coincident Constraint is between two Points*. The command does not delete one of the Points*. You can delete a Coincident-Constraint- see How to delete a constraint. Usually, add a Coincident Constraint for construction geometry. * Points, start-Points, end-Points, center-Points. |

You cannot (usually) add a constraint that OVER-constrains a sketch-element. For example, a Point* has two degrees-of-freedom. 1.If you add a Coincident Constraint between a Point(1) and a Line (CoincidentPtoL) you remove 1 degrees-of-freedom. 2.Then, if you attempt to add a Coincident Constraint between Point(1) and a different Point (CoincidentPtoP) you attempt to remove 2 more degrees-of-freedom - or to remove 3 degrees-of-freedom in total. It is not possible to remove three(3) degrees-of-freedom from a Point. To correct the problem, you must first delete the Coincident Constraint between the Point(1) and the Line (CoincidentPtoL) - see Delete Constraint - then add the Coincident Constraint between the two Points (CoincidentPtoP). |