CAD tip # 6392:

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How to construct a circle from three tangents?

If you want to draw a circle defined by 3 tangential lines, you can use an undocumented AutoCAD command AI_CIRCTAN.

To create a construction of the type "two tangents and a radius" you can use the TTR option in the standard command CIRCLE.

ACAD

*CAD

12.11.2008 12462×

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applies to: AutoCAD ·

See also:
Tip 4015:	How to construct a tangent to two circles/arcs?
Tip 4014:	How to draw a tangential circle to two lines?

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