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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:136AI GHM

Order: 18

Horizontal side: 136 Vertical side: 136

Elements: 3√2, 6, 6√2, 10, 12, 10√2, 11√2, 20, 15√2, 17√2, 20√2, 40, 48, 58, 68, 78, 58√2, 68√2.

Code: 785 0 58 684 68 68 683 136 68 104 78 58 103 88 58 112 99 57 481 136 68 587 0 58 580 58 58 154 73 43 123 88 46 170 99 57 36 73 43 65 76 40 64 82 40 401 116 40 202 136 20 203 136 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)

78
68√2
68
10√2
10
11√2
48
58
58√2
15√2
12
17√2
3√2
6
6√2
40
20√2
20