QG-4: List of Perpendicular QG-Lines
In next list all lines with QG-points involved are mentioned that are perpendicular.
When lines have more than 2 points on it, they are defined by the 2 points with lowest serial number.
QG-P1.QG-P6 _|_ QG-P2.QG-P12 // QG-P1.QA-P20 //QG-P8.QA-P10 //QG-P14.QA-P5 // QG-P12.QL-P5 // QL-P2.QL-P3 // QL-L1=Newton Line