https://www.khanacademy.org/math/geometry-home/geometry-lines/the-golden-ratio/v/the-golden-ratio 2021-05-19T21:46:39Z The golden ratio An introduction to one of the most amazing ideas/numbers in mathematics Sal Khan video https://cdn.kastatic.org/googleusercontent/GwSojXAXUfg0D-XhaZ6UH0WwM5_8M0AFiFfl-Rmi9RmFvy548bowPsHBhvRDreZ8IS5vohjpxP4f6PTSvKnrUelR The golden ratio An introduction to one of the most amazing ideas/numbers in mathematics https://cdn.kastatic.org/ka-youtube-converted/5zosU6XTgSY.mp4/5zosU6XTgSY.mp4 882 Understanding and exploring the golden ratio https://www.khanacademy.org/math/geometry/hs-geo-similarity/hs-geo-similar-and-congruent-triangles-modeling/v/goldren-ratio-and-rembrandt-s-self-portrait 2021-02-16T16:08:13Z Geometry word problem: the golden ratio Triangle similarity, the Golden ratio, and art, all converge in this inspiring video! Sal Khan video https://cdn.kastatic.org/googleusercontent/rRGt_Z1lPe7Hb9Nyxw0rqXvWBDJsnfxPQgV-8xVGR9mQOhh5fYhcBmoXVtlBSayGe6g2__lzJ4_DNoCasVjgT-PG Geometry word problem: the golden ratio Triangle similarity, the Golden ratio, and art, all converge in this inspiring video! https://cdn.kastatic.org/ka-youtube-converted/v5SAMuRanGM.mp4/v5SAMuRanGM.mp4 503 Understanding and exploring the golden ratio https://www.khanacademy.org/math/geometry/hs-geo-similarity/hs-geo-similar-and-congruent-triangles-modeling/v/golden-ratio-to-find-radius-of-moon 2021-02-16T16:08:14Z Geometry word problem: Earth & Moon radii Similarity and the Golden ratio join forces again, this time to save the Earth! (Or maybe just finding its radius) Sal Khan video https://cdn.kastatic.org/googleusercontent/vzdIBNRlnPqKD7p04Nc3RNNey22ydYmmx5dxg6vC8XZk0vpBixquRBeNAbXY64TnPVECm9vmD_iTMVD_5-3qHJB3 Geometry word problem: Earth & Moon radii Similarity and the Golden ratio join forces again, this time to save the Earth! (Or maybe just finding its radius) https://cdn.kastatic.org/ka-youtube-converted/cnCQGKx6LhE.mp4/cnCQGKx6LhE.mp4 383 Understanding and exploring the golden ratio