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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:80AK2of2 GHM

Order: 19

Horizontal side: 80 Vertical side: 80

Elements: 4, 4√2, 5√2, 8, 10, 8√2, 12, 14, 12√2, 14√2, 20, 18√2, 19√2, 28, 20√2, 23√2, 40, 33√2, 40√2.

Code: 405 0 40 404 40 40 336 47 47 190 47 47 202 20 20 121 12 40 47 12 40 40 16 40 124 28 28 87 12 36 86 12 28 182 38 18 101 38 28 52 43 23 281 66 28 142 80 14 230 43 23 203 20 0 143 80 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)

40
40√2
33√2
19√2
20√2
12
4
4√2
12√2
8
8√2
18√2
10
5√2
28
14√2
23√2
20
14