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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:57AA7of16 GHM

Order: 19

Horizontal side: 57 Vertical side: 57

Elements: 2√2, 4, 4√2, 6, 8, 9, 8√2, 9√2, 14, 15, 18, 14√2, 21, 15√2, 18√2, 27, 28, 21√2, 30.

Code: 277 0 57 186 9 39 85 27 49 84 35 49 140 43 57 141 57 57 45 27 45 44 31 45 305 27 15 24 29 43 281 57 43 96 0 30 185 9 21 95 0 21 217 0 21 210 21 21 61 27 21 154 42 0 153 57 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)

27
18√2
8
8√2
14√2
14
4
4√2
30
2√2
28
9√2
18
9
21
21√2
6
15√2
15