Body proportions a series of continuous geometric progressions. Polykleitos uses the distal phalanx of the little finger as the basic module for determining the proportions of the human body, scaling this length up repeatedly by to obtain the ideal size of the other phalanges, the hand, forearm, and upper arm in turn. Leonardo da Vinci believed that the ideal human proportions were determined by the harmonious proportions that he believed governed the universe, such that the ideal man would fit cleanly into a circle as depicted in his famed drawing of "Vitruvian man". Body proportions While there is significant variation in anatomical
Anatomical plane Anatomical plane An anatomical plane is a hypothetical plane used to transect the human body, in order to describe the location of structures or the direction of movements. In human and animal anatomy, three principal planes are used: There could be any number of sagittal planes; however, there is only one cardinal sagittal plane. The term "cardinal" refers to the one plane that divides the body into equal segments, with exactly one half of the body on either side of the cardinal plane. The term "cardinal plane" appears in some texts as the "principal plane". The terms are interchangeable. The