AutoSketch

[#1]

Does anyone know how to draw a curve of a specified radius connecting two previously drawn line ends? In this instance I don't know the location of the center point. The attached drawing shows the issue. The smaller sketch shows the four possible ways that a curve of a given radius could be drawn through a pair of points.

For that matter, suppose I wanted any entity, such as an ellipse, to pass through these line ends. Is there a way to pre-draw the shape, then move it and snap it to the line endpoints?

[#2]

On your first question, draw two circles of your desired radius with centers on those line ends. The intersection is the center of your desired arc. Then just use the center-and-2 points arc tool. The delete your two circles.



Your second question seemed to conflict with itself. If you have the finished desired entity created (= it has end points) then just use the translate tool (a very powerful/versatile tool) to move it's end point to the other end point.



If it doesn't have end points then your solution depends on the particulars. In the case of a complete ellipse, your problem is indeterminate.....i.e. it has an infinite number of solutions. .

[#3]

Thanks, I was forgetting my basic geometry.