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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:138AX2of2 GHM

Order: 19

Horizontal side: 138 Vertical side: 138

Elements: 1√2, 2, 2√2, 4, 4√2, 7, 7√2, 14, 15, 18√2, 33, 36, 33√2, 36√2, 51, 69, 51√2, 87, 69√2.

Code: 875 0 51 694 69 69 693 138 69 184 87 51 330 105 69 331 138 69 517 0 51 510 51 51 151 66 51 77 66 51 76 66 44 147 73 51 42 70 40 43 70 36 22 72 38 23 72 36 12 73 37 364 102 0 363 138 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)

87
69√2
69
18√2
33√2
33
51
51√2
15
7
7√2
14
4√2
4
2√2
2
1√2
36√2
36