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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:212AD GHM

Order: 18

Horizontal side: 212 Vertical side: 212

Elements: 5√2, 6√2, 11√2, 22, 16√2, 32, 34, 38, 34√2, 35√2, 36√2, 68, 70, 74, 71√2, 74√2, 138, 106√2.

Code: 1385 0 74 1064 106 106 716 141 141 350 141 141 321 138 106 162 154 90 381 176 106 362 212 70 116 143 79 225 154 68 50 143 79 745 0 0 744 74 0 60 148 74 703 212 0 683 142 0 342 176 34 341 176 68

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)

138
106√2
71√2
35√2
32
16√2
38
36√2
11√2
22
5√2
74
74√2
6√2
70
68
34√2
34