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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:48AI GHM

Order: 18

Horizontal side: 48 Vertical side: 48

Elements: 2√2, 3, 4, 3√2, 4√2, 6, 8, 6√2, 9, 8√2, 9√2, 16, 14√2, 20, 15√2, 28, 20√2, 30.

Code: 305 0 18 281 28 48 207 28 48 206 28 28 42 32 24 43 32 20 165 32 8 24 30 18 66 26 14 92 9 9 154 15 3 140 26 14 93 9 0 65 9 3 84 40 0 83 48 0 35 9 0 34 12 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
20
20√2
4√2
4
16
2√2
6√2
9√2
15√2
14√2
9
6
8√2
8
3
3√2