Restoration of mapping by "Gougu Theorem"

mapping a plan of Yamato-Sanzan.

Abstract

At the study meeting of this association, autumn 2015, I proposed a new hypothesis:  “An original viewpoint which dictates the location selections of the ancient central roads during the Asuka era and of the Fujiwara-Gu Imperial Audience Hall”, at the historical geography session.  In here the main buildings and roads had been built from the orthocenter, Taiji, of the three holy mountains in the ancient Asuka, Yamato-Sanzan during the Empress Suiko Period.   As the orthocenter could be obtained using the high-precision map of Yamato-Sanzan, the burden of its proof of mapping- probability is on the present author.  Using ancient Chinese mathematical and astrological books, like the Sea Island Mathematical Manual, I will restore the map-measuring method.