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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216CU GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 4, 3√2, 4√2, 6, 8, 8√2, 12√2, 14√2, 28, 26√2, 40, 34√2, 68, 74, 71√2, 74√2, 108, 142, 108√2.

Code: 1425 0 74 1084 108 108 1083 216 108 344 142 74 283 176 80 142 190 94 401 216 108 260 190 94 63 148 74 47 148 80 40 152 80 124 164 68 87 148 76 80 156 76 745 0 0 744 74 0 36 145 71 710 145 71 681 216 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)

142
108√2
108
34√2
28
14√2
40
26√2
6
4
4√2
12√2
8
8√2
74
74√2
3√2
71√2
68