Non-ultraperfect Perfect Isosceles Right Triangled Square

Title: _ 9:22PA

Order: 9

Horizontal side: 22 Vertical side: 22

Elements: 1√2, 4√2, 6, 5√2, 8, 6√2, 10, 8√2, 22.

Code: 227 0 22 103 22 12 40 12 12 54 17 7 66 16 6 80 8 8 81 16 8 12 17 7 65 16 0

The fact that every NPIRTS has a subdivided triangle is not recorded as a property. The properties below may precede order:side in a tiling's title:

• e = elegant. No tiling is just a T-junction. Such tilings may be considered aesthetically pleasing.
• p/r = pseudotriangular/rectangular inclusion subdivided into at least 6/5 triangles respectively.

Credit for Discovery

Jasper D. Skinner found many NPIRTS's before this catalogue was built by Geoffrey H. Morley. Only the two lowest order NPIRTS's are attributed to discoverers:

J. Douglas and E.P. Starke (D&S, United States) (7:10PA only)

Arthur H. Stone (AHS, United States, 1916-2000) (7:7PA only)