Changing the dimension later to something other than 90° would conflict with the relations. To prevent this potential conflict, the software makes the sketch over defined, requiring you to delete the dimension, make the dimension driven, or delete relations.
Additionally, resolving conflicts is more difficult when redundant relations exist. You would have to delete the perpendicular relation and the adjacent horizontal or vertical relation. The SketchXpert functionality displays all possible solutions.
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Sketch relations are geometric constraints between sketch entities or between a sketch entity and a plane, axis, edge, or vertex. Relations can be added automatically or manually.
Yes
Click Tools > Sketch Settings, and toggle Automatic Relations.
Click View Sketch Relations (View toolbar) or View > Sketch Relations to toggle the display of sketch relations. If you clear View > Sketch Relations , but you select a sketch entity in an open sketch, the sketch relation icons appear.
Turn off automatic relations. See Can I turn off automatic relations? above.
- or -
Click No Solve Move (Sketch toolbar) so that when you move sketch entities, the dimensions and relations in the sketch are not solved.
Snaps are sketch settings that control how entities snap to each other. There are two types of snaps:
Sketch snaps
Global sketch settings that apply to all sketch commands.
Quick snaps
Single operation sketch snaps you set as you sketch.
In the Standard toolbar, click Options > Systems Options > Sketch > Relations/Snaps , then set the snap options.
The definition of an over defined sketch:
Delete the relations or dimensions that conflict with your design intent. Use SketchXpert to assist you.
Relations or dimensions dangle when the entity (external to the sketch) to which the relation or dimension is applied either changes or is deleted. The dimension or relation is unresolved. For example, if you dimension to the corner of a block in a sketch, but you then insert a cut feature that removes the corner before the sketch, the dimension dangles because the corner no longer exists
Delete or repair the dimension. You can also use the Replace functionality under Entities in the Display/Delete Relations PropertyManager.
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