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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:57AA14of16 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: 307 0 57 283 30 29 182 48 39 181 48 57 92 57 48 91 57 57 273 57 21 20 2 29 144 16 15 143 30 15 47 0 27 40 4 27 87 0 23 80 8 23 67 30 21 210 36 21 211 57 21 155 0 0 154 15 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)

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