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Primitive Perfect Isosceles Right Triangled Square

Title: _ 15:42AP GHM

Order: 15

Horizontal side: 42 Vertical side: 42

Elements: 2, 5, 4√2, 7, 5√2, 8, 9, 8√2, 12, 14, 16, 14√2, 21, 28, 21√2.

Code: 285 0 14 214 21 21 213 42 21 71 28 21 57 28 21 50 33 21 91 42 21 27 28 16 163 30 0 82 38 8 81 38 16 42 42 12 145 0 0 144 14 0 123 42 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)

28
21√2
21
7
5
5√2
9
2
16
8√2
8
4√2
14
14√2
12