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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:70AI GHM

Order: 18

Horizontal side: 70 Vertical side: 70

Elements: 4, 3√2, 4√2, 6, 8, 6√2, 8√2, 9√2, 12√2, 18, 20, 18√2, 20√2, 30, 22√2, 36, 40, 32√2.

Code: 407 0 70 220 40 70 301 70 70 186 0 30 367 18 48 46 50 44 87 54 48 80 62 48 126 38 32 45 50 40 207 50 40 206 50 20 320 38 32 185 0 12 62 6 6 94 9 3 63 6 0 32 9 3

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)

40
22√2
30
18√2
36
4√2
8
8√2
12√2
4
20
20√2
32√2
18
6√2
9√2
6
3√2