InsertDraftingCircle and Arc3 Points

The Three-Point Circle command enables you to create a circle or circular arc passing through three specified points. When working in the model (three-dimensional) environment, the resulting circle and arc entities are created on the Work Plane.
In the Mode drop-down list you can select whether to create:

(1) a Circle, (2) an Arc Start End Middle: the first two points are the end points, the third is a through point, (3) an Arc Start Middle End: the first and the last are the end points, the second is the through point.

Select Invert Arc to create the opposite arc with the same end points before clicking to input the third point.

Select Centerlines to automatically draw the centerlines.

In the Axis angle box type the value of the angle between the centerlines and the X-Axis (positive values increase counterclockwise).

When creating arcs and specifying points with the Tangent Snap possible solutions might be more than one. You can select the one you need by right-clicking and selecting Next in the context menu, or, even more easily, by hitting the N key of the keyboard. By repeatedly doing so, in fact, you will be cyclically showed all the possible solutions, so that you can select the one you prefer. Furthermore, as you might get different results depending on the points you pick, see also Note on the different solutions for an arc to know more.