D A Kent & D J Muraki
A Geometric Solution of a Cubic from Omar
Khayyam ...
in which Coloured Diagrams are Used Instead of Letters for the Greater Ease of Learners
Published Feb 2016, Amer Math Monthly, 123
 File Repository: paper draft with original figures

 note: published paper has an incorrect icon in the proof (correct fig 8 below)
New Worksheet
worksheet w/ brief instructions
worked example
blank axes
Old Worksheet + GeoGebra: this is a modified construction for which the hyperbola is in a fixed position.
 choose positive a, b, c & check against numerical solution, or
 colorize construction as in K&M, or label as in fauvel & gray (orientation flipped)
outside the box