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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:138AP GHM

Order: 18

Horizontal side: 138 Vertical side: 138

Elements: 7, 7√2, 10, 14, 10√2, 20, 21, 19√2, 28, 20√2, 29, 40, 49, 35√2, 69, 49√2, 89, 69√2.

Code: 895 0 49 694 69 69 693 138 69 204 89 49 203 109 49 102 119 59 291 138 69 103 119 49 192 138 40 497 0 49 490 49 49 354 84 14 283 119 21 403 138 0 70 91 21 71 98 21 217 98 21 141 98 14

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)

89
69√2
69
20√2
20
10√2
29
10
19√2
49
49√2
35√2
28
40
7√2
7
21
14