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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:105AD GHM

Order: 18

Horizontal side: 105 Vertical side: 105

Elements: 4√2, 5√2, 10, 10√2, 15, 20, 21, 28, 29, 21√2, 35, 28√2, 29√2, 42, 48, 38√2, 56, 42√2.

Code: 422 42 63 384 38 67 290 76 105 291 105 105 56 42 71 107 47 76 106 47 66 205 57 56 481 105 76 46 38 67 155 42 56 423 42 21 357 42 56 563 77 0 282 105 28 283 105 0 215 0 0 214 21 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)

42√2
38√2
29√2
29
5√2
10
10√2
20
48
4√2
15
42
35
56
28√2
28
21
21√2