ฉันรักการแปล . Lemma 3 uses Lemma 2 and gives formulas for the lengths of the diagonals of a circumscriptible quadrilateral counterpart to those for cyclic quadrilaterals as given in [1], [7, § 10.2, p. 148],
ฉันรักการแปล. Lemma 3 uses Lemma 2 and gives formulas for the lengths of the diagonals of a circumscriptible quadrilateral counterpart to those for cyclic quadrilaterals as given in [1], [7, § 10.2, p. 148],