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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:216BX3of4 GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 3√2, 6, 8, 6√2, 8√2, 12, 16, 16√2, 24, 24√2, 28√2, 56, 74, 80, 68√2, 71√2, 74√2, 142, 108√2.

Code: 1425 0 74 1084 108 108 803 216 136 286 108 108 242 160 112 241 160 136 567 160 136 686 148 68 166 144 96 86 136 88 165 144 80 85 136 80 64 142 74 63 148 74 127 148 80 745 0 0 744 74 0 36 145 71 710 145 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
80
28√2
24√2
24
56
68√2
16√2
8√2
16
8
6√2
6
12
74
74√2
3√2
71√2