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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:55AC1of2 GHM

Order: 19

Horizontal side: 55 Vertical side: 55

Elements: 4, 4√2, 7, 8, 9, 7√2, 11, 8√2, 13, 14, 11√2, 16, 14√2, 21, 22, 27, 28, 20√2, 22√2.

Code: 287 0 55 200 28 55 271 55 55 80 8 35 81 16 35 42 20 31 41 20 35 135 20 22 144 34 21 143 48 21 72 55 28 93 20 22 73 55 21 167 0 27 116 0 11 227 11 22 220 33 22 211 55 21 115 0 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)

28
20√2
27
8√2
8
4√2
4
13
14√2
14
7√2
9
7
16
11√2
22
22√2
21
11