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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:41AA GHM

Order: 18

Horizontal side: 41 Vertical side: 41

Elements: 4, 5, 4√2, 7, 5√2, 8, 6√2, 7√2, 10, 8√2, 14, 10√2, 12√2, 19, 14√2, 20, 21, 15√2.

Code: 217 0 41 150 21 41 104 31 31 103 41 31 54 36 26 53 41 26 66 0 20 85 6 18 84 14 18 120 22 26 191 41 26 205 0 0 45 6 14 44 10 14 144 20 0 143 34 0 72 41 7 73 41 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)

21
15√2
10√2
10
5√2
5
6√2
8
8√2
12√2
19
20
4
4√2
14√2
14
7√2
7