The apex and base of a square pyramid

In geometry, an apex (pl.: apices) is the vertex which is in some sense the "highest" of the figure to which it belongs. The term is typically used to refer to the vertex opposite from some "base". The word is derived from the Latin for 'summit, peak, tip, top, extreme end'. The term apex may used in different contexts:


  1. ^ Gottschau, Marinus; Haverkort, Herman; Matzke, Kilian (2018). "Reptilings and space-filling curves for acute triangles". Discrete & Computational Geometry. 60 (1): 170–199. arXiv:1603.01382. doi:10.1007/s00454-017-9953-0. S2CID 14477196.
  2. ^ Jacobs, Harold R. (2003). Geometry: Seeing, Doing, Understanding (Third ed.). New York City: W. H. Freeman and Company. pp. 647, 655. ISBN 978-0-7167-4361-3.