Implicit instance for the PolygonM3Pair builder. This has to go in the PtM3 companion object so it can be found by an A => B function
where PtM3 is the type B parameter.
Implicit instance for the PolygonM3Pair builder. This has to go in the PtM3 companion object so it can be found by an A => B function
where PtM3 is the type B parameter.