Pascal's theorem

Описание: The "hexagrammum mysticum" discovered in 1640 by Blaise Pascal (16 years old at the time).

For more information, videos and interactive material, see my blog pages on
• Projective geometry: https://tinyurl.com/ya65amsq
• Projective metrics: https://tinyurl.com/ybdy957z
• The Euclidean degeneration: https://tinyurl.com/ybs2lyr6