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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:216BX4of4 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 108 108 803 216 136 286 108 108 247 136 136 246 136 112 567 160 136 686 148 68 162 152 96 163 152 80 82 160 88 83 160 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
24√2
56
68√2
16√2
16
8√2
8
6√2
6
12
74
74√2
3√2
71√2