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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:80AP GHM

Order: 18

Horizontal side: 80 Vertical side: 80

Elements: 5, 9, 7√2, 8√2, 9√2, 10√2, 15, 16, 18, 20, 17√2, 25, 18√2, 20√2, 35, 30√2, 45, 40√2.

Code: 455 0 35 404 40 40 306 50 50 100 50 50 51 45 40 72 52 33 151 60 40 202 80 20 355 0 0 184 18 17 183 36 17 92 45 26 91 45 35 163 52 17 82 60 25 253 60 0 203 80 0 174 35 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)

45
40√2
30√2
10√2
5
7√2
15
20√2
35
18√2
18
9√2
9
16
8√2
25
20
17√2