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CAD tip # 1183:

Question CAD
% platform category

How to get the center gravity of an area?

Convert your area (e.g. an irregular shape or a polygon) to a region (with the REGION command) and then use the MASSPROP command on that region. You will find the center of gravity and moment of inertia of this zero-thickness body. Before MASSPROP you may need to switch the UCS to that object (UCS New Object).

You can use the geometric calculator - enter the POINT command and on the coordinates prompt ender 'CAL. As an expression, enter (end+end+end)/3 (for triangle) or e.g. (end+end+end+end+end)/5 (pentagon) and click the individual vertices.

Alternatively, Autodesk Map 3D offers direct centroid-related functions.

See also the osnap mode "geometric center".

ACADLTMap

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28.3.2001 75635×

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applies to: AutoCAD · AutoCAD LT · AutoCAD Map 3D ·

See also:
Tip 12836:	How to suppress snapping when inserting symbols and families in Revit?
Tip 12790:	Centered dynamic label (e.g. area label).
Tip 12762:	Multiline and vertical text in Fusion 360 sketches.
Tip 12532:	Error when inserting standard part - Modeling: Failed to insert a part into assembly!
Tip 12458:	How to align/center text and other objects in Fusion 360?

Selected tip: DXF in R12 format saved from A2000 does not explode MTEXT to TEXT (unlike R14)

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