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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:142AY GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 4√2, 5√2, 10, 10√2, 12√2, 20, 16√2, 24, 20√2, 32, 27√2, 39, 40, 55, 71, 55√2, 87, 71√2.

Code: 875 0 55 714 71 71 713 142 71 164 87 55 120 103 71 391 142 71 40 91 59 241 115 59 272 142 32 557 0 55 550 55 55 401 95 55 202 115 35 203 115 15 323 142 0 104 105 5 103 115 5 54 110 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)

87
71√2
71
16√2
12√2
39
4√2
24
27√2
55
55√2
40
20√2
20
32
10√2
10
5√2