Parallel (geometry) as a pair of straight lines in a plane which do not meet appears as Definition 23 in Book I of Euclid's Elements. Alternative definitions were discussed by other Greeks, often as part of an attempt to prove the parallel postulate. Proclus attributes a definition of parallel lines as equidistant lines to Posidonius and quotes Geminus in a similar vein. Simplicius also mentions Posidonius' definition as well as its modification by the philosopher Aganis. At the end of the nineteenth century, in England, Euclid's Elements was still the standard textbook in secondary schools. The traditional treatment of geometry was being
During the Reign of the Queen of Persia teens, the second regresses back to their childhood, and the third see the sale of the family farm and the dispersal of the family. The book drew comparisons to the works of Anne Tyler, Marilynne Robinson, Douglas Unger and Susan Engberg. During the Reign of the Queen of Persia During the Reign of the Queen of Persia is the first novel by American author Joan Chase. On its publication in 1983 it won the Hemingway Foundation/PEN Award. The story is told from the perspective of the four granddaughters of the "Queen of Persia", an Ohio farmwife, during the 1950s. The