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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:156AG GHM

Order: 18

Horizontal side: 156 Vertical side: 156

Elements: 12, 14, 13√2, 14√2, 20, 26, 28, 20√2, 30, 25√2, 38, 40, 30√2, 58, 78, 58√2, 98, 78√2.

Code: 985 0 58 784 78 78 783 156 78 204 98 58 203 118 58 252 143 53 381 156 78 587 0 58 580 58 58 304 88 28 303 118 28 130 143 53 123 130 28 267 130 40 403 156 0 281 116 28 142 130 14 141 130 28

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
25√2
38
58
58√2
30√2
30
13√2
12
26
40
28
14√2
14