find orthocenters, incenters, centroids, circumcenters, and the Euler line
+23248 In a triangle:
the orthocenter is the point of intersection of the three altitudes,
the incenter is the point of intersection of the three angle bisectors,
the centroid is the point of intersection of the three medians,
the circumcenter is the point of intersection of the three perpendicular bisectors of the sides,
the Euler line is the line that passes through the orthocenter, the centroid, and the circumcenter.
