Which points of concurrency meet outside of the triangle?

Answer 1

The excenters which are the concurrency of 2 external bisectors and one internal bisector. Every triangle has 3 excenters, they are the center of the excircle the circles that are tangent to the sides from the outside of the triangle.

Aldo, in obtuse triangles, the barycenter (intersection of the medians) and the orthocenter (intersection of the altitudes) lays outside the triangle.

Answer 2

for obtuse angled triangle the concurrency of medians and altitudes lie outside.

Answer 3

Mutual settlement