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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:80AX GHM

Order: 19

Horizontal side: 80 Vertical side: 80

Elements: 4, 4√2, 5√2, 8, 6√2, 10, 8√2, 14, 10√2, 16, 20, 15√2, 17√2, 20√2, 30, 23√2, 30√2, 50, 40√2.

Code: 505 0 30 404 40 40 236 57 57 170 57 57 154 55 25 40 70 40 41 74 40 62 80 34 163 66 20 82 74 28 81 74 36 143 80 20 307 0 30 300 30 30 104 40 20 103 50 20 52 55 25 204 60 0 203 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)

50
40√2
23√2
17√2
15√2
4√2
4
6√2
16
8√2
8
14
30
30√2
10√2
10
5√2
20√2
20