Segol Segol Segol ( ) is a Hebrew niqqud vowel sign that is represented by three dots forming an upside down equilateral triangle "ֶ ". As such, it resembles an upside down therefore sign (a because sign) underneath a letter. In modern Hebrew, it indicates the phoneme which is similar to "e" in the English word sound in "sell" and is transliterated as an "e". In Modern Hebrew, segol does the Hataf Segol ( , "Reduced Segol"). The reduced (or "ħataf") niqqud exist for segol, patah, and kamatz which contain a shva next to it. The following table contains the pronunciation
Schläfli symbol Schläfli symbol In geometry, the Schläfli symbol is a notation of the form {p,q,r...} that defines regular polytopes and tessellations. The Schläfli symbol is named after the 19th-century Swiss mathematician Ludwig Schläfli, who made important contributions in geometry and other areas. The Schläfli symbol is a recursive description, starting with "{p}" for a "p"-sided regular polygon that is convex. For example, {3} is an equilateral triangle, {4} is a square, {5} a convex regular pentagon and so on. Regular star polygons are not convex, and their Schläfli symbols {"p"/"q"} contain irreducible fractions "p"/"q", where "p" is the number of vertices.