QL-P11: Nine-point Center QL-Diagonal Triangle


QL-P11 is the Nine-point Center of the Diagonal Triangle (QL-Tr1) of the Reference Quadrilateral.

Infovisual QL-P11-infovisual-cvt-01.png
1st CT-coordinate

a2 l2 m n (2 m n SA + n l SB + l m SC – b2 m2 – c2 n2)

– m2 n2 (8 Δ2 (l m + l n – m n) – b2 l m SB – c2 l n SC)

1st DT-coordinate

S2 + Sb Sc

Properties



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