Since the goal of figures is drawing an exact shape on the ice, the skater had to concentrate on the depth of the turn (how much the turn extends into or out of the circle), the integrity of the edges and cusps (round-patterned edges leading into or out of the circle), and its shape. There were three types of three turns: the standard three, the double three, and the paragraph double three. The three turn had to be skated on a circle, its turns' points either pointing up or down or lying along the figure's long axis. For the double three, the points of both threes had to be directed towards the center of each circle, and had to divide the circle into three equal curves. The middle curve had to divide the circles into halves by the figure's long axis. The paragraph double three, which was executed at the highest levels of competition, was done by tracing "two circles with two turns at each circle, all on one foot from one push-off". The paragraph double three was difficult to accomplish because the shape and placement of the turns had to be perfectly symmetrical, the turns had to be done on a true edge with no scrapes on the ice, and the circles had to be the same size and exactly round. All those combined compulsory figures are illustrated below: