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CAD tip CAD tip # 1183:

Question CAD 
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Q - question

How to get the center gravity of an area?

A - answer 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.

ACADLTMap
100% *  CAD 
28.3.2001    35768x  
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applies to: AutoCAD · AutoCAD LT · AutoCAD Map ·

See also:
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Tip 9786:3D osnaps to planes in point clouds.
Tip 9572:Installation error: Product download consists of multiple files...
Tip 9305:Problem inserting the current version of a component from Content Center.
Tip 9197:Export of 3D CAD models to Google Earth.


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