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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:220CI GHM

Order: 19

Horizontal side: 220 Vertical side: 220

Elements: 1√2, 3√2, 6, 6√2, 9√2, 18, 30, 30√2, 31√2, 32√2, 46, 64, 46√2, 66, 78, 110, 78√2, 142, 110√2.

Code: 1425 0 78 1104 110 110 1103 220 110 324 142 78 316 143 79 462 220 64 461 220 110 10 143 79 787 0 78 780 78 78 661 144 78 302 174 48 643 220 0 303 174 18 65 144 12 64 150 12 96 147 9 187 156 18 34 147 9

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
31√2
46√2
46
1√2
78
78√2
66
30√2
64
30
6
6√2
9√2
18
3√2