Ski with Body Perpendicular to the Slope 

Figure 5.1 Body Perpendicular to the Slope. The skier on the left is skiing in the proverbial back seat and does not have control over the front of the skis. The skier on the right is skiing with the body perpendicular to the slope. The slope and the body form a 90 degree angle. To better understand this concept think of your upper body always being perpendicular to the direction of travel regardless of whether you are skiing directly down the fall line or not. In the drawing on the right, the angle of the skier’s back and lower legs match.