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How do I find a geometry book with a proof of nine points circle ?
Three points of mid-point of each side of a triangle, three points of perpendiculars intercepts with opposite sides,
three points of angle bisectors intercepts with the opposite sides, all together 9 points form a circle.
It was in geometry text books of high school in Asian countries.
Thanks. Mathsoc. You have a mathematics mind.
1 Answer
- MathsorcererLv 71 decade agoFavorite Answer
It was in my geometry book in high school and then again in university. I don't have my books with me at work--obviously--but here is a link for the 9-point circle:
