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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:216CW4of4 GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 2, 2√2, 4, 4√2, 6, 6√2, 7√2, 14, 20, 27√2, 54, 74, 54√2, 81, 88, 74√2, 81√2, 135, 142.

Code: 1425 0 74 1351 135 216 817 135 216 816 135 135 272 162 108 203 162 88 542 216 54 76 135 81 67 142 88 66 142 82 147 148 88 883 162 0 42 146 78 43 146 74 22 148 76 23 148 74 745 0 0 744 74 0 543 216 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)

142
135
81
81√2
27√2
20
54√2
7√2
6
6√2
14
88
4√2
4
2√2
2
74
74√2
54