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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:156BO GHM

Order: 19

Horizontal side: 156 Vertical side: 156

Elements: 2, 4, 4√2, 8, 8√2, 9√2, 10√2, 12√2, 20, 28, 20√2, 38, 40, 58, 49√2, 78, 58√2, 98, 78√2.

Code: 985 0 58 784 78 78 783 156 78 204 98 58 203 118 58 102 128 68 381 156 78 126 116 56 285 128 40 585 0 0 584 58 0 96 107 49 27 116 58 82 124 48 490 107 49 83 124 40 42 128 44 43 128 40 401 156 40

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)

98
78√2
78
20√2
20
10√2
38
12√2
28
58
58√2
9√2
2
8√2
49√2
8
4√2
4
40