Wasn't familiar with all the English terms, but at least I could guess what they meant. Too bad that it's a single "click-and-release", the mouse cursor makes it a bit difficult to do this accurately. After the first run (where I got a relatively bad score on the parallelogram because I didn't know it was one-click-and-release) with a laptop touchpad, I had an average of 6.40... let's see what the combined total is.
Btw, for the "right angle", do you simply have to do a 90 degree angle, or match the length as well?
Your inaccuracy by category:
Parallelogram 13.2 5.4 13.0
Midpoint 0.0 4.1 4.0
Bisect angle 2.6 1.1 2.8
Triangle center 6.1 3.8 5.7
Circle center 3.2 4.0 4.5
Right angle 3.7 4.4 5.2
Convergence 16.0 20.6 7.3
Average error: 6.22 (lower is better)
Nice little game - guess I should try it with a mouse
EDIT: added tabs to align the table.
