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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216CJ GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 2, 2√2, 4, 4√2, 6√2, 7√2, 14, 13√2, 20, 17√2, 34, 54, 74, 54√2, 71√2, 74√2, 108, 142, 108√2.

Code: 1425 0 74 1084 108 108 1083 216 108 341 142 108 132 155 95 201 162 108 547 162 108 546 162 54 70 155 95 66 142 82 147 148 88 176 145 71 42 146 78 43 146 74 22 148 76 23 148 74 745 0 0 744 74 0 710 145 71

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)

142
108√2
108
34
13√2
20
54
54√2
7√2
6√2
14
17√2
4√2
4
2√2
2
74
74√2
71√2