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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:131AA GHM

Order: 19

Horizontal side: 131 Vertical side: 131

Elements: 2, 2√2, 4, 18, 18√2, 27, 32, 34, 36, 27√2, 31√2, 45, 32√2, 33√2, 34√2, 63, 65, 66, 68.

Code: 685 0 63 661 66 131 332 99 98 651 131 131 316 68 67 322 131 66 26 66 65 45 68 63 323 131 34 635 0 0 451 45 63 277 45 63 270 72 63 187 45 36 186 45 18 367 63 36 23 99 34 340 97 34 341 131 34

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)

68
66
33√2
65
31√2
32√2
2√2
4
32
63
45
27
27√2
18
18√2
36
2
34√2
34