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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:242AI3of8 GHM

Order: 19

Horizontal side: 242 Vertical side: 242

Elements: 6, 6√2, 12, 12√2, 18, 18√2, 21√2, 40, 41, 42, 40√2, 41√2, 80, 81, 60√2, 81√2, 121, 161, 121√2.

Code: 1615 0 81 1214 121 121 1213 242 121 404 161 81 403 201 81 412 242 80 411 242 121 817 0 81 810 81 81 604 141 21 186 183 63 803 242 0 423 183 21 122 195 51 123 195 39 62 201 45 63 201 39 187 183 39 214 162 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)

161
121√2
121
40√2
40
41√2
41
81
81√2
60√2
18√2
80
42
12√2
12
6√2
6
18
21√2