Slice & Dice to get to the right mark! By picking a level from the menu, you'll get a graphical representation of the shape you'll be cutting. Each shape has a ball or multiple balls that need to stay in each of your slices. Complete each slice and using the bar above the shape, cut it down to the right size!
Slice shape - Click and drag mouse to draw a line which cuts off the smaller side of the slice. This only works if all the balls are on the same side, and if you do not collide with the balls.