Part I —

A search for images of Wallace Stevens's "Pediment of Appearance"—

(Click to enlarge.)

Image-- A version of Stevens's 'pediment of appearance'

Part II —

A geometric analogue of the pediment—

Image-- A version of Stevens's 'pediment of appearance'

Note that the above cross also appears in
Euclid's proof of the Pythagorean theorem.

Part III —

An echo of the above geometry—

Image-- Fuentiduena chapel at the Cloisters