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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216BF GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 2, 2√2, 4, 6, 8, 10, 10√2, 20, 24, 30, 27√2, 54, 54√2, 78, 84, 78√2, 81√2, 138, 108√2.

Code: 1385 0 78 1084 108 108 816 135 135 270 135 135 301 138 108 205 138 88 241 162 108 542 216 54 105 138 78 104 148 78 26 156 86 45 158 84 83 156 78 25 156 84 67 156 84 843 162 0 785 0 0 784 78 0 543 216 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)

138
108√2
81√2
27√2
30
20
24
54√2
10
10√2
2√2
4
8
2
6
84
78
78√2
54