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

Non-ultraperfect Perfect Isosceles Right Triangled Square

Title: r 9:16PC4of4

Order: 9

Horizontal side: 16 Vertical side: 16

Elements: 1√2, 2, 2√2, 4, 3√2, 6, 6√2, 10, 16.

Code: 167 0 16 103 16 6 60 6 6 61 12 6 47 12 6 36 13 3 10 13 3 27 12 2 20 14 2

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
10
6√2
6
4
3√2
1√2
2
2√2