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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:99AA GHM

Order: 18

Horizontal side: 99 Vertical side: 99

Elements: 1, 1√2, 2, 9, 9√2, 18, 16√2, 23, 18√2, 30, 23√2, 33, 36, 30√2, 46, 36√2, 38√2, 60.

Code: 382 38 61 364 36 63 363 72 63 182 90 81 181 90 99 92 99 90 91 99 99 603 99 30 21 38 63 12 39 62 11 39 63 337 39 63 166 23 46 236 0 23 465 23 0 304 69 0 303 99 0 235 0 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

38√2
36√2
36
18√2
18
9√2
9
60
2
1√2
1
33
16√2
23√2
46
30√2
30
23