5L-s-P7: 5L-QL-P20 Par1/Par2-Homothetic Center

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5L-s-P7 is the Par1/Par2-Homothetic Center (see nL-n-Luc5e) of QL-P20 wrt the Reference 5-Line.

Properties:
• 5L-s-P7 = 5L-n-P2.5L-n-P7 (-1:5)
• The lengths of the line segments of Ref are equal to the corresponding line segments of Par2.

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