How to draw tangent curves

SketchUp
1

When drawing a freeform shape, how does one go back to make all the curves tangent to one another? Thanks, - steve

2

Insert a screenshot using the Snipping Tool, or post an example SKP.

You do realize that in SketchUp there are no real curves or circles. They are approximated with edge segments.

3

Thanks, Dan, i found a way to do what i wanted.