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

Non-ultraperfect Perfect Isosceles Right Triangled Square

Title: _ 9:16PA

Order: 9

Horizontal side: 16 Vertical side: 16

Elements: 1√2, 2, 2√2, 3, 3√2, 6, 9, 7√2, 16.

Code: 167 0 16 93 16 7 70 7 7 61 13 7 32 16 4 31 16 7 26 14 2 16 13 1 25 14 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)

16
9
7√2
6
3√2
3
2√2
1√2
2