.... one swallow does not make spring nor the geometer a line nor the sailor a sea trip.
Ἁγίου Γρηγορίου τοῦ Θεολόγου, Εἰς τὰ ἅγια Φῶτα.
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ORTHOLOGIC TRIANGLES
Let ABC be a triangle, P, Q two points, A'B'C' the padal triangle of Q and S a point on the Euler line such that OS/OH= t: numbe...
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X(5459) Let ABC be a triangle, let A', B', C' be the midpoints of BC, CA, AB. Let L_a be the perpendicular through A' ...
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Theorem 1. Let ABC be an equilateral triangle and P a point. The Euler lines of the triangles PBC,PCA,PAB are concurent.Denote the point ...
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