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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:142AL GHM

Order: 19

Horizontal side: 142 Vertical side: 142

Elements: 3√2, 6, 6√2, 10, 11, 9√2, 10√2, 11√2, 12√2, 20, 20√2, 29, 40, 51, 61, 71, 81, 61√2, 71√2.

Code: 815 0 61 714 71 71 713 142 71 104 81 61 103 91 61 112 102 60 511 142 71 617 0 61 610 61 61 124 73 49 36 82 58 67 85 61 66 85 55 113 102 49 405 102 20 90 82 58 291 102 49 204 122 0 203 142 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
10
11√2
51
61
61√2
12√2
3√2
6
6√2
11
40
9√2
29
20√2
20