I have to locate orthocenter and centeriod of many triangles.
What I now do is, draw the orthogonals separately and find their intersection (although having two of then is enough) and in some cases I have to extend the sides of triangle for obtuse one. This is time consuming.
In the attached file, from quadrilateral A1A2A3A4 I want to produce the other one H1H2H3H4
Could anybody help me to automate this procedure?
PS
Orthocenter: intersection point of 3 orthogonal lines of a triangle
centeriod: intersection point of 3 medians of a triangle
1.dwg