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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:36AF GHM

Order: 18

Horizontal side: 36 Vertical side: 36

Elements: 1√2, 2, 2√2, 3, 4, 3√2, 4√2, 6, 7, 6√2, 9, 7√2, 12, 14, 12√2, 21, 15√2, 18√2.

Code: 215 0 15 184 18 18 156 21 21 36 18 18 95 21 12 77 0 15 76 0 8 147 7 15 33 21 12 120 18 12 121 30 12 62 36 6 42 4 4 63 36 0 43 4 0 22 6 2 23 6 0 12 7 1

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√2
3√2
9
7
7√2
14
3
12√2
12
6√2
4√2
6
4
2√2
2
1√2