How do I confirm my answer for the orthocenter of a triangle?

Question

I know how to find the orthocenter, but how do do I check to see if I have the right answer? For instance, once I find the centroid of a triangle I can use the centroid formula(a+b+c)/3 to check my answer. Is there anything like that for the orthocenter?

Answer 1

If $|a|=|b|=|c|$, the orthocenter is given by $a+b+c$.