United States or Togo ? Vote for the TOP Country of the Week !
The Egyptians also constructed pyramids of a certain slope by means of arithmetical calculations based on a certain ratio, se-qeṭ, namely the ratio of half the side of the base to the height, which is in fact equivalent to the co-tangent of the angle of slope. The use of this ratio implies the notion of similarity of figures, especially triangles.
Word Of The Day