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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:53AD GHM

Order: 19

Horizontal side: 53 Vertical side: 53

Elements: 2, 3√2, 7, 7√2, 8√2, 13, 14, 10√2, 15, 16, 17, 18, 19, 20, 21, 16√2, 17√2, 18√2, 19√2.

Code: 215 0 32 184 18 35 153 36 38 177 36 53 176 36 36 36 18 35 137 21 38 203 34 18 192 53 19 21 36 38 162 16 16 141 14 32 72 21 25 71 21 32 193 53 0 104 24 8 183 34 0 163 16 0 82 24 8

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)

21
18√2
15
17
17√2
3√2
13
20
19√2
2
16√2
14
7√2
7
19
10√2
18
16
8√2