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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:212BL GHM

Order: 19

Horizontal side: 212 Vertical side: 212

Elements: 3, 3√2, 6, 6√2, 9√2, 21, 30, 34, 38, 42, 34√2, 38√2, 68, 72, 51√2, 72√2, 106, 140, 106√2.

Code: 1405 0 72 1064 106 106 1063 212 106 344 140 72 343 174 72 382 212 68 381 212 106 727 0 72 720 72 72 514 123 21 423 174 30 683 212 0 90 132 30 64 138 24 63 144 24 307 144 30 34 141 21 33 144 21 211 144 21

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)

140
106√2
106
34√2
34
38√2
38
72
72√2
51√2
42
68
9√2
6√2
6
30
3√2
3
21