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CAD tip CAD tip # 6940:

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Q - question

Missing constraint "perpendicular" in 2D sketch.

A - answer You are drawing geometry in Inventor 2D sketch mode and the perpendicular and parallel constraints are not applied. The "Inferred Constraints" icon (toggle) is on.

Your constraints are probably off. Using automatic (inferred) constraints when drawing sketch lines is controlled by the "Inferred constraints" icon in the Sketch > Constraint ribbon:

Enabling constraints

But the individual constraint types are set in the "Constraint Options" dialog. In this dialog you can filter, which specific constraint types will be applied during sketching. You have probably switched off (unchecked) the perpendicular and parallel constraints. You can run this dialog by right-clicking in the sketch environment and by choosing the the function "Constraint options".

Constraint options

100% *  CAD 
16.9.2009    4849×  
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applies to: Inventor ·

See also:
Tip 11522:How to create 3D splines in Fusion 360 - e.g. for pipe axes?
Tip 10769:What is the orange marker on the sketch icon in Fusion 360 model tree?
Tip 6896:Using AutoCAD constraints to clean a drawing.
Tip 4995:Different shape of a spline imported from a DWG file.

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