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- ...cumcircle <math>\Omega</math> and isogonals <math>AF</math> and <math>AG (F,G \in \Omega)</math> of the <math>\angle BAC</math> be given. Prove that <math>PF \cdot P'G = Q'F \cdot QG.</math>34 KB (6,879 words) - 16:36, 2 February 2025