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YCor
YCor
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Nagel line of a Tetrahedrontetrahedron?

It's well known that there is an analogy for the Euler line in a tetrahedron, but is there also an analogy for the nagel line of a tetrahedron? I can't seem to find any decent literature talking about it - specifically, is it true that the incenter, centroid, and spiekerSpieker center of a tetrahedron lie on a line?

Nagel line of a Tetrahedron?

It's well known that there is an analogy for the Euler line in a tetrahedron, but is there also an analogy for the nagel line of a tetrahedron? I can't seem to find any decent literature talking about it - specifically, is it true that the incenter, centroid, and spieker center of a tetrahedron lie on a line?

Nagel line of a tetrahedron?

It's well known that there is an analogy for the Euler line in a tetrahedron, but is there also an analogy for the nagel line of a tetrahedron? I can't seem to find any decent literature talking about it - specifically, is it true that the incenter, centroid, and Spieker center of a tetrahedron lie on a line?

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Benjamin L. Warren
Benjamin L. Warren
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Nagel line of a Tetrahedron?

It's well known that there is an analogy for the Euler line in a tetrahedron, but is there also an analogy for the nagel line of a tetrahedron? I can't seem to find any decent literature talking about it - specifically, is it true that the incenter, centroid, and spieker center of a tetrahedron lie on a line?