Continuing the discussion from Update Tool Dialogs and Properties Editor:
I found it layered with other draftblocks, where I had decided that the triangle dealy wasn’t helpful enough, but I have re-created it as a standalone with the triangle. Point A9. circlemedmask.val (8.6 KB) File produced with the 20210315 Seamly2D Release.
My use was to get a point that would be equidistant from Points A1, A2, & A3 & the triangle tool was the only one which got close enough.
The measurements are related to the circumference of the persons head, which I have placed in the Variables list. I copied a pattern off YouTube which I found while trying to find a good pattern to make a mask for a young nephew. His love for Curious George failed to overcome his aversion to having a thing strapped to his face.