A Intersection point of medians, 2, intersection point of diagonals, 90°
B Intersection point of medians, 2, intersection point of diagonals, 180°
C Intersection point of altitudes, 4, intersection point of diagonals, 25°
D Intersection point of sides, 4, intersection point of diagonals, 45°

It think this is a problem with the code. It worked properly for me. If you are facing further problems you can report the question.
P.S- I am not part of the technical team.