Circle > Radius - Object - Object (Draw Menu)

This command draws a circle with a given radius which is tangent to two specified lines (or Construction Aid lines) or circles (or Construction Aid circles)

If a circle is to be drawn while working in isometric or dimetric views, this must be done with the command Ellipse > Vector - Vector because the result on the page is not circular but elliptical.

After choosing this command a dialog appears in which the radius of the circle can be entered.

Any part of an existing object can be identified as the first reference object. This can be a side of a rectangle or a circle arc within a surface. Ellipses and ellipse parts can not be identified.

The identified object is referred to as the "Reference Object".

The position at which the object was identified (the "ID point") has no effect on the rest of the command. As there are up to eight possible results, a choice based on the position of the ID point would be too complex.

Any part of an existing object can be identified as the second reference object. This can be a side of a rectangle or a circle arc within a surface. Ellipses and ellipse parts can not be identified.

The identified object is referred to as the "Reference Object".

After identifying both reference objects, all the possible circles are calculated (the graphic shows one possible resulting group).

The desired circle can then be chosen with the help of a small dialog. Only one circle can be chosen at a time.

If the distance between the objects is more than double the radius or if two parallel lines are identified, the circles cannot be calculated and an error message appears.

The circle is assigned to the current layer. In addition, it contains a reference to the current pen.