Post #780 5.98K Apr 7, 2025, 07:18 UTC Неожиданное доказательство «без слов» теоремы Птолемея:youtu.be/heu3ha4X2YA YouTube Ptolemy's Theorem | Proof without Words This is a short, animated visual proof demonstrating Ptolemy's Theorem, which is an equality about the lengths of the six lines connecting four points randomly selected around a circle. The proof, without words, uses the scaling of three triangles to obtain… ✍ 3 ❤ 3 🔥 2 🙏 1