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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:220CK GHM

Order: 19

Horizontal side: 220 Vertical side: 220

Elements: 3, 3√2, 6, 9, 9√2, 15√2, 30, 32, 32√2, 46, 48, 64, 46√2, 48√2, 78, 110, 78√2, 142, 110√2.

Code: 1425 0 78 1104 110 110 1103 220 110 324 142 78 323 174 78 462 220 64 461 220 110 787 0 78 780 78 78 484 126 30 483 174 30 643 220 0 301 156 30 152 171 15 94 165 21 93 174 21 61 171 21 32 174 18 31 174 21

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)

142
110√2
110
32√2
32
46√2
46
78
78√2
48√2
48
64
30
15√2
9√2
9
6
3√2
3