Illustrated. I'm out of room on my web drive at AOL, or I'd post the image. Page 205 of the Mathemagic volume in Childcraft Annual, 1978. Shows an Egyptian coordinate system or star chart. They could not have traveled back and forth from Africa to China in the Aladdin story I read in another volume, without accurate star charts, clocks, and rutters. A rutter is a sea journal that keeps East-West coordinates. The could not make accurate global charts without trigonometry and 3 dimensional calculations, with the initial assumption that the Earth is a globe.
Easter Island statues just crack me up to no end!
