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Poristic Triangles


Two triangles are said to be poristic triangles if they share the same incircle and circumcircle. More specifically, in the plane of a reference triangle, a triangle is said to be poristic if it has the same incircle and circumcircle as the reference triangle.


See also

Poncelet's Porism, Porism

This entry contributed by Floor van Lamoen

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References

Brisse, E. "Perspective Poristic Triangles." Forum Geom. 1, 9-16, 2001. http://forumgeom.fau.edu/FG2001volume1/FG200103index.html.Gallatly, W. "Poristic Triangles." Ch. 3 in The Modern Geometry of the Triangle, 2nd ed. London: Hodgson, pp. 15-23, 1913.

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Poristic Triangles

Cite this as:

van Lamoen, Floor. "Poristic Triangles." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/PoristicTriangles.html

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