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Available in DoubleCAD TurboCAD LTE Pro only

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Makes two arcs/circles concentric - sharing the same center point. You can also use this tool to place a point or endpoint at the center of a circle or arc.

1. Start with two arcs/circles. Activate the Concentric constraint and select the arc/circle you want to make concentric. This object will move to the second. Image Added Image Removed
   
2. Select the second arc/circle.
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   The first arc/circle moves, keeping its orientation, so that it is concentric with the second. The concentric constraint symbol (a plus sign) is added at the point of tangency.
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   You can also use this tool on a point or line endpoint. Select a circle/arc and the point or endpoint. . .
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   . . . Image Added. . . and the circle/arc moves so that its center meets the endpoint or point.
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