2 Leg proportion splits the body into 3 equal parts

Our second proportion is based on the legs, which will generally be half at the joint of the knee.

To be more specific, the lower leg from the bottom of the heel will be equal in height to the full length of the femur from the greater trochanter down to the patella.

Even more usefully, this same length will roughly equal the height of the torso down to the start of the pelvis. This breaks down the entire figure into roughly three equal parts.