Illustration of the intersection of a hexagonal pyramid and a plane.
Ervin Kenison, S. B. and Edward B. Waite, S. B. Mechanical Drawing (Chicago: American School Of Correspondence, 1917) Part III: Page 100
919×2400, 202.2 KiB
392×1024, 36.5 KiB
245×640, 20.8 KiB
122×320, 8.7 KiB