(Redirected from Petrie polygon)Jump to navigation Jump to search
A zigzag walk, also called a k-zigzag, is a polygon (usually skew) formed by following the edges of a polyhedron in a particular way.
Definition[edit | edit source]
A k-zigzag is a polygon formed by following the edges of a polyhedron in a particular way. Starting from a particular vertex and edge the polygon follows that edge to another vertex. It then follows along the kth rightmost edge to the next vertex, and then follows along the kth leftmost edge, repeating this pattern of left and right turns until the path loops back on itself.
A 1-zigzag, that is a path alternating between the leftmost and rightmost possible edges, is also called a Petrie polygon or sometimes just a zigzag, and is integral in the construction of the Petrie dual.
See also[edit | edit source]
External links[edit | edit source]
- Wikipedia Contributors. "Petrie polygon".
- Weisstein, Eric W. "Petrie Polygon" at MathWorld.
References[edit | edit source]
Bibliography[edit | edit source]
- Coxeter, Harold Scott MacDonald; Moser, William Oscar Jules (1972). Generators and Relations for Discrete groups (4 ed.). Springer-Verlag. doi:10.1007/978-3-662-21946-1.
- McMullen, Peter; Schulte, Egon (1997). "Regular Polytopes in Ordinary Space" (PDF). Discrete Computational Geometry (47): 449–478. doi:10.1007/PL00009304.