If you take an index card, you can check certain tasks, like the right angle. One time, the index card is correct with a good score, and the next time, there is no freakin way what they say is a right angle, is actually a right angle. So I think there is some major flaws in the game itself. I measured out the middle of the circle, and again, some of the plots that they say are correct, are way off.
Bjorn, that's cheating. It's supposed to be done by eye, not by index card!
My sister (the artist) said she gave up when she got to the "center of the circle" one and noticed that her computer showed an obvious oval, not a circle. So obviously, all monitors are not created equal.