Perps and polars | Euclid Elements Book 1 Prop 12

Geogebra B1P12: https://www.geogebra.org/m/vnb9ngry
Geogebra Pole-to-Polar: https://www.geogebra.org/m/ts6fzayw

Book 1 Prop 12: https://mathcs.clarku.edu/~djoyce/java/elements/bookI/propI12.html

Entropism article: https://zxq9.com/archives/2176
Shocking truth about determinants: https://zxq9.com/archives/2187
Foundations of QAnal: https://zxq9.com/archives/category/foundations-of-qanal
Euclid Elements website: https://mathcs.clarku.edu/~djoyce/java/elements/

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