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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:84AD GHM

Order: 19

Horizontal side: 84 Vertical side: 84

Elements: 4, 4√2, 8, 6√2, 8√2, 12, 16, 12√2, 18, 14√2, 15√2, 18√2, 28, 30, 36, 27√2, 28√2, 42, 42√2.

Code: 425 0 42 424 42 42 276 57 57 150 57 57 122 12 30 121 12 42 62 18 36 284 40 14 283 68 14 47 68 42 40 72 42 87 68 38 80 76 38 186 0 18 365 18 0 167 68 30 303 84 0 185 0 0 144 54 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)

42
42√2
27√2
15√2
12√2
12
6√2
28√2
28
4
4√2
8
8√2
18√2
36
16
30
18
14√2