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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:156BG1of2 GHM

Order: 19

Horizontal side: 156 Vertical side: 156

Elements: 4√2, 8, 8√2, 9√2, 12√2, 18, 16√2, 20√2, 21√2, 30, 40, 30√2, 48, 40√2, 60, 48√2, 78, 96, 78√2.

Code: 965 0 60 784 78 78 783 156 78 181 96 78 92 105 69 304 126 48 303 156 48 210 105 69 605 0 0 404 40 20 403 80 20 85 80 52 84 88 52 162 96 36 44 84 48 124 96 36 480 108 48 481 156 48 204 60 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)

96
78√2
78
18
9√2
30√2
30
21√2
60
40√2
40
8
8√2
16√2
4√2
12√2
48√2
48
20√2