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

Non-ultraperfect Perfect Isosceles Right Triangled Square

Title: _ 9:14PA4of4

Order: 9

Horizontal side: 14 Vertical side: 14

Elements: 1, 1√2, 2, 2√2, 4, 3√2, 7, 7√2, 14.

Code: 147 0 14 76 7 7 73 7 0 45 7 3 25 7 1 24 9 1 30 11 3 15 7 0 14 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:

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)

14
7√2
7
4
2
2√2
3√2
1
1√2