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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:278AA GHM

Order: 19

Horizontal side: 278 Vertical side: 278

Elements: 3√2, 4√2, 6, 8, 6√2, 8√2, 12, 18, 21√2, 42, 42√2, 76, 84, 97, 118, 139, 160, 118√2, 139√2.

Code: 1605 0 118 1394 139 139 1393 278 139 214 160 118 30 181 139 971 278 139 183 178 118 67 178 136 60 184 136 127 178 130 40 190 130 80 186 126 81 194 126 845 194 42 1187 0 118 1180 118 118 761 194 118 424 236 0 423 278 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)

160
139√2
139
21√2
3√2
97
18
6
6√2
12
4√2
8√2
8
84
118
118√2
76
42√2
42