Pentagon Pentagon In geometry, a pentagon (from the Greek πέντε "pente" and γωνία "gonia", meaning "five" and "angle") is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting. A self-intersecting "regular pentagon" (or "star pentagon") is called a pentagram. A "regular pentagon" has Schläfli symbol {5} and interior angles are 108°. A "regular pentagon" has five lines of reflectional symmetry, and rotational symmetry of order 5 (through 72°, 144°, 216° and 288°). The diagonals of a convex regular pentagon are in the golden ratio to its
The Sum of Us The Sum of Us The Sum of Us is a play by David Stevens. It is the third play in his now completed "A Currency Trilogy" of which the first play is "The Inn at the Beginning of the World". The second play is "The Beast and the Beauty" produced by the Old Mill Theatre, Perth, on 22 June 2012. The plot revolves around the comfortable relationship between widower Harry and his gay son Jeff and their individual searches for the right mate. Harry unconditionally loves his Rugby-playing son and even takes an active part in Jeff's search for Mr.