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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:208AE GHM

Order: 18

Horizontal side: 208 Vertical side: 208

Elements: 1√2, 2, 2√2, 20, 24, 26, 20√2, 27√2, 40, 30√2, 54, 40√2, 64, 84, 104, 84√2, 124, 104√2.

Code: 1245 0 84 1044 104 104 1043 208 104 204 124 84 203 144 84 245 144 80 641 208 104 847 0 84 840 84 84 304 114 54 26 142 82 16 141 81 25 142 80 270 141 81 261 168 80 402 208 40 541 168 54 403 208 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)

124
104√2
104
20√2
20
24
64
84
84√2
30√2
2√2
1√2
2
27√2
26
40√2
54
40