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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:142AK GHM

Order: 19

Horizontal side: 142 Vertical side: 142

Elements: 2√2, 6, 6√2, 9, 8√2, 12, 9√2, 10√2, 12√2, 20, 20√2, 31, 40, 51, 61, 71, 81, 61√2, 71√2.

Code: 815 0 61 714 71 71 713 142 71 104 81 61 86 83 63 315 91 40 511 142 71 20 83 63 617 0 61 610 61 61 124 73 49 123 85 49 62 91 55 63 91 49 94 82 40 93 91 40 401 122 40 202 142 20 203 142 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)

81
71√2
71
10√2
8√2
31
51
2√2
61
61√2
12√2
12
6√2
6
9√2
9
40
20√2
20