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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:212BQ GHM

Order: 19

Horizontal side: 212 Vertical side: 212

Elements: 11, 9√2, 11√2, 18, 20, 18√2, 31, 32, 38, 42, 32√2, 37√2, 64, 69, 74, 69√2, 106, 143, 106√2.

Code: 1435 0 69 1064 106 106 1063 212 106 374 143 69 643 180 42 322 212 74 321 212 106 743 212 0 697 0 69 690 69 69 381 107 69 185 107 51 184 125 51 205 107 31 94 116 42 114 127 31 113 138 31 427 138 42 311 138 31

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)

143
106√2
106
37√2
64
32√2
32
74
69
69√2
38
18
18√2
20
9√2
11√2
11
42
31