Extend the symmedians of a triangle to meet the circumcircle at , , . Then the symmedian point of is also the symmedian point of . The triangles and are cosymmedian triangles, and have the same Brocard circle, second Brocard triangle, Brocard angle, Brocard points, and circumcircle.

# Cosymmedian Triangles

## See also

Brocard Angle, Brocard Circle, Brocard Points, Brocard Triangles, Circumcircle, Comedian Triangles, Symmedian, Symmedian Point## Explore with Wolfram|Alpha

## References

Lachlan, R.*An Elementary Treatise on Modern Pure Geometry.*London: Macmillian, p. 63, 1893.

## Referenced on Wolfram|Alpha

Cosymmedian Triangles## Cite this as:

Weisstein, Eric W. "Cosymmedian Triangles."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/CosymmedianTriangles.html