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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:138AQ1of2 GHM

Order: 19

Horizontal side: 138 Vertical side: 138

Elements: 3√2, 6, 6√2, 9, 8√2, 9√2, 16, 18, 21, 16√2, 32, 37, 29√2, 32√2, 53, 69, 53√2, 85, 69√2.

Code: 855 0 53 694 69 69 693 138 69 164 85 53 163 101 53 82 109 61 371 138 69 290 109 61 537 0 53 530 53 53 181 71 53 92 80 44 91 80 53 217 80 53 66 74 38 36 71 35 65 74 32 324 106 0 323 138 0

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)

85
69√2
69
16√2
16
8√2
37
29√2
53
53√2
18
9√2
9
21
6√2
3√2
6
32√2
32