Non-ultraperfect Perfect Isosceles Right Triangled Square

Title: _ 12:28PA4of32

Order: 12

Horizontal side: 28 Vertical side: 28

Elements: 1, 1√2, 2, 2√2, 3, 4, 5, 5√2, 9, 14, 14√2, 28.

Code: 287 0 28 146 14 14 43 14 10 145 14 0 16 9 9 25 10 8 24 12 8 56 9 5 93 9 0 15 9 8 37 9 8 55 9 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)