Note on the different solutions for an arc

Especially when the Tangent Snap is enabled, the solution for the Arc/Circle depends on the point you click on. In the pictures below you can see how, snapping on the "internal" or on the "external" side of a line, a different arc is drawn.

Clicking on the internal side
Clicking on the external side

Please notice that this is true for all the clicks, not just for the last. So all the other geometric solutions can be found snapping each line externally or internally.