CAD tip # 11998:

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Double object snap (osnap) - how to align a line between two lines? (geom.constraints)

How to move a horizontal fixed-length line to two existing angled lines to form a triangle?

This construction cannot be performed with just plain osnaps. But you can use AutoCAD parametric constraints to simulate a "double osnap".

First, you will need to anchor the moved line horizontally, to fix its length and then snap it to the right and left part of the given "frame". The following video illustrates the procedure of snapping the yellow line to the red frame to create the resulting triangle in the DWG drawing.

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30.8.2018 3557×

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See also:
Tip 13185:	Constraining object movement to a specified curve (rail) in AutoCAD.
Tip 12755:	How to create a polyline with multi-colored segments?
Tip 11896:	How to drive dyn.block parameters or constraints from Excel?
Tip 11761:	Parametric constraints between 3D objects in AutoCAD.
Tip 11497:	Automatic grouping of drawing objects.

Selected tip: Setting pagesetup (printer) for multiple layouts.

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