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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:139AI4of4 GHM

Order: 19

Horizontal side: 139 Vertical side: 139

Elements: 5√2, 10, 14, 10√2, 14√2, 20, 15√2, 27, 28, 20√2, 28√2, 42, 35√2, 55, 56, 42√2, 69, 70, 97.

Code: 977 0 139 693 97 70 427 97 139 426 97 97 275 97 70 286 0 42 567 28 70 703 84 0 352 119 35 204 104 50 203 124 50 152 139 55 553 139 0 104 114 40 103 124 40 285 0 14 54 119 35 145 0 0 144 14 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)

97
69
42
42√2
27
28√2
56
70
35√2
20√2
20
15√2
55
10√2
10
28
5√2
14
14√2