Četverokut

Četverokut ili četverougao je zatvoren geometrijski lik koji ima četiri kuta i četiri stranice. Zbroj svih kutova u četverokutu iznosi 360°.

Podjela četverokuta:

  • trapez
  • pravokutnik
    • kvadrat
  • paralelogram
    • romb

Vanjski linkovi

  • Varignon and Wittenbauer Parallelograms by Antonio Gutierrez from "Geometry Step by Step from the Land of the Incas"
  • Van Aubel's theorem Quadrilateral with four squares by Antonio Gutierrez from "Geometry Step by Step from the Land of the Incas"
  • Compendium Geometry Analytic Geometry of Quadrilaterals
  • Quadrilaterals Formed by Perpendicular Bisectors
  • Projective Collinearity in a Quadrilateral