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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:58AB GHM

Order: 19

Horizontal side: 58 Vertical side: 58

Elements: 1√2, 3, 3√2, 6, 7√2, 9√2, 14, 10√2, 15, 12√2, 18, 14√2, 20, 22, 17√2, 18√2, 20√2, 30, 22√2.

Code: 305 0 28 204 20 38 203 40 38 187 40 58 186 40 40 12 41 39 170 41 39 104 30 28 142 14 14 124 12 16 36 21 25 67 24 28 96 12 16 35 21 22 157 21 22 220 36 22 221 58 22 143 14 0 72 21 7

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
20√2
20
18
18√2
1√2
17√2
10√2
14√2
12√2
3√2
6
9√2
3
15
22√2
22
14
7√2