QG-L5:  2nd QG-Quasi Euler line

The 2nd QG-Quasi Euler line is the line through QG-P8 (2nd Quasi Centroid), QG-P9 (2nd Quasi Circumcenter), QG-P10 (2nd Quasi Orthocenter) and QG-P11 (2nd Quasi Nine-point Center).
QG-Tr2-2nd-QuasiDiagonalTriangle-01
Coefficients:
  • The coefficients of QG-L5 can be easily derived by calculating the Crossdifference (see Ref-13, keyword: crossdifference) of QG-P8 and QG-P9.

Properties:
  • QG-L5 is the Euler line of the 2nd QG-Quasi Diagonal Triangle QG-Tr2.
  • The 2nd QG-Quasi Euler line QG-L4 // the 1st QG-Quasi Euler line QG-L5.
  • QG-P1 is the Railway Watcher (see QL-L-1) by the 1st QG-Quasi Euler line QG-L4 and the 2nd QG-Quasi Euler line QG-L5 (note Eckart Schmidt).
 

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