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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:178BF6of8 GHM

Order: 19

Horizontal side: 178 Vertical side: 178

Elements: 2√2, 4, 4√2, 8, 6√2, 8√2, 20, 23√2, 33, 28√2, 46, 33√2, 38√2, 56, 61, 61√2, 89, 117, 89√2.

Code: 1175 0 61 894 89 89 893 178 89 284 117 61 203 145 69 332 178 56 331 178 89 80 125 69 64 131 63 46 133 65 87 137 69 463 145 23 26 131 63 45 133 61 617 0 61 610 61 61 384 99 23 563 178 0 234 122 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)

117
89√2
89
28√2
20
33√2
33
8√2
6√2
4√2
8
46
2√2
4
61
61√2
38√2
56
23√2