Non-ultraperfect Perfect Isosceles Right Triangled Square

Title: r 10:17PA4of4

Order: 10

Horizontal side: 17 Vertical side: 17

Elements: 2√2, 3, 4, 3√2, 5, 4√2, 6, 8, 9, 17.

Code: 177 0 17 93 17 8 83 8 0 57 8 8 26 11 6 47 13 8 46 13 4 36 8 3 65 11 0 35 8 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)