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 Our Discontent should try to bridge the gap between the eastern and western view of numbers, which have been in conflict since Pythagoras. He ends with a relevant quote from Prince Charles from his millennium broadcast on the BBC. Boyle's bottom line is that measuring does not in itself improve anything. The Sum of Our Discontent The Sum of Our Discontent is a nonfiction book by David Boyle. It was published by Texere in 2001. The tagline and theme of the book is "Why numbers make us irrational". The author's premise is that humans have been trying to improve the quality of