I'm using the following layer structure to create an arc shape in Sketch:
I'm going to create several lengths of arc that are an arbitrary length around the circle (e.g. one at 45º, one at 90º, one at 135º, and so on).
What I'd like to do is reliably and accurately round the corners of each arc shape that I create -- like this, but an actual perfect half circle, not poorly hand-drawn path arcs.
How would I go about doing that?