to the face. This the Egyptians called the seked (pronounced seqt ; see Ancient Egytpian units of measurement http://en.wikipedia.org/wiki/Ancient_Egyptian_weights_and_measures). Note Also called the "seqt". See Thales (http://en.wikipedia.org/wiki/Thales) where Thales measures the height of the pyramids by measuring the length of the shadow at a time when his shadow was the same