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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:172AO GHM

Order: 19

Horizontal side: 172 Vertical side: 172

Elements: 5, 5√2, 10, 12, 15, 12√2, 15√2, 30, 31, 43, 31√2, 50, 37√2, 43√2, 74, 55√2, 86, 98, 86√2.

Code: 987 0 172 376 61 135 747 98 172 866 86 86 303 61 105 152 76 120 153 76 105 105 76 110 55 76 105 54 81 105 556 31 55 122 98 98 316 0 74 507 31 105 865 86 0 315 0 43 125 31 43 437 0 43 430 43 43

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)

98
37√2
74
86√2
30
15√2
15
10
5
5√2
55√2
12√2
31√2
50
86
31
12
43
43√2