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Petro2806 / Notebook

ICPC World Finals Notebook
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Geometry formulas #152

Closed Petro2806 closed 3 months ago

Petro2806 commented 4 months ago
  1. Median length
  2. Bisector length
mshcherba-LeetCode commented 4 months ago

Змінити текст до прямої Ейлера. For a general triangle, the orthocenter H, the centroid G, and the circumcenter O, in this order, lie on the same line (Euler line) and |HG| : |GO| = 2 : 1

mshcherba-LeetCode commented 4 months ago

У теоремі Птолемея "if and only if" ABCD is a cyclic quadrilateral if and only if AB.CD + AD.BC = AC.BD