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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216DC GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 3, 3√2, 6, 6√2, 10, 9√2, 10√2, 20, 21, 21√2, 26√2, 52, 72, 52√2, 92, 72√2, 82√2, 144, 108√2.

Code: 1445 0 72 1084 108 108 826 134 134 266 108 108 212 155 113 213 155 92 92 164 104 66 158 98 522 216 52 36 155 95 65 158 92 35 155 92 107 134 92 106 134 82 207 144 92 923 164 0 725 0 0 724 72 0 523 216 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)

144
108√2
82√2
26√2
21√2
21
9√2
6√2
52√2
3√2
6
3
10
10√2
20
92
72
72√2
52