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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216CC GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 2√2, 4, 4√2, 6, 6√2, 9√2, 14, 11√2, 20, 34, 27√2, 54, 74, 54√2, 88, 74√2, 81√2, 142, 108√2.

Code: 1425 0 74 1084 108 108 816 135 135 270 135 135 341 142 108 112 153 97 201 162 108 542 216 54 90 153 97 26 142 86 47 144 88 46 144 84 147 148 88 883 162 0 62 148 80 63 148 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
108√2
81√2
27√2
34
11√2
20
54√2
9√2
2√2
4
4√2
14
88
6√2
6
74
74√2
54