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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216DS GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 3, 3√2, 6, 9, 10, 12, 10√2, 20, 15√2, 21√2, 52, 72, 52√2, 82, 92, 72√2, 82√2, 134, 144.

Code: 1445 0 72 1341 134 216 827 134 216 826 134 134 212 155 113 63 155 107 95 155 104 150 149 107 34 152 104 33 155 104 121 164 104 522 216 52 107 134 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
134
82
82√2
21√2
6
9
15√2
3√2
3
12
52√2
10
10√2
20
92
72
72√2
52