5P-s-Tf4: 5P-Orthopolar Line

5P-s-Tf4 transforms a line into another line.
Let L be a random line. 5P-s-Tf4(L) is the locus of 5P-s-Tf3(P) with P varying on L.

Another construction uses QA-Tf6(L) = Quang Duong’s Transformation.
A 5-Point contains 5 4-Points (Quadrangles). The 5 versions of QA-Tf6(L) for these Quadrangles are lying on 5P-s-Tf4(L).

5P s Tf4 NQD Transformation 03