Squaring.net >> IRTS >> NPIRTSS >> Order 9

Non-ultraperfect Perfect Isosceles Right Triangled Square

Title: _ 9:22PD

Order: 9

Horizontal side: 22 Vertical side: 22

Elements: 1√2, 2, 2√2, 4, 4√2, 7√2, 8√2, 14, 22.

Code: 227 0 22 143 22 8 80 8 8 74 15 1 46 18 4 26 16 2 45 18 0 16 15 1 25 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:

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)

22
14
8√2
7√2
4√2
2√2
4
1√2
2