I am really enjoying reviewing geometry. The characters and where they live are just cool.
You can do easy, medium, hard. There are hints while you are drawing the shapes, like make the triangle then turn it into a isoceles and in turn make that to the asked for equilateral triangle. And it does review what it taught pretty regularly. I am currently on exterior interior angles being equal and wish it explained a little more, but I just pulled out my class notes.
The only thing that bugs me is they call the guys Tringulum, Aequilaterus, Quadrilaterum, Parallelogrammum etc. To me they are Triangle, equilateral triangle, quadrilateral, parallelogram etc. After more exploring I discovered click the book, find the evolution page, click on the guy and under their name it gives the ones I'm used to.
Wish it worked with a stylus... finger burn.
7/24/14 I subtracted one star because I don't agree with some of their definitions: example-1 a rectangle is 0 equal sides, 4 right angles, 2 pairs of parallel sides, 4 equal angles. My text book has both pairs of opposite sides are equal and parallel, and has 4 right angles.
example-2 parallellogram is 0 equal sides, 0 right angles, 2 pairs of parallel sides, 0 equal angles. My text book has both pairs of opposite sides are equal and parallel, opposite angles are equal