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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:128AO GHM

Order: 18

Horizontal side: 128 Vertical side: 128

Elements: 3√2, 7√2, 14, 10√2, 18, 13√2, 14√2, 20, 18√2, 28, 23√2, 36, 41, 46, 41√2, 64, 87, 64√2.

Code: 875 0 41 644 64 64 643 128 64 234 87 41 363 110 28 182 128 46 181 128 64 463 128 0 417 0 41 410 41 41 201 61 41 102 71 31 134 74 28 30 71 31 76 61 21 147 68 28 146 68 14 287 82 28

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)

87
64√2
64
23√2
36
18√2
18
46
41
41√2
20
10√2
13√2
3√2
7√2
14
14√2
28