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- Thread starter geometry
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- #1

- #2

Allegro

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Hello Geometry,

See http://mathworld.wolfram.com/Nine-PointCircle.html

I think the sketch with four points A,B,C and D,four ninepoint circles ,two obtuse and two acute triangles are the ones you'r looking for.

Regards.

Last edited:

- #3

selfAdjoint

Staff Emeritus

Gold Member

Dearly Missed

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The nine point circle works with general triangles. Maybe you're drawing something wrong.

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