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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:77AB GHM

Order: 18

Horizontal side: 77 Vertical side: 77

Elements: 2√2, 5√2, 10, 11, 10√2, 15, 19, 20, 21, 25, 27, 21√2, 30, 31, 35, 25√2, 27√2, 31√2.

Code: 315 0 46 314 31 46 203 62 57 102 72 67 151 77 77 103 72 57 52 77 62 353 77 27 113 42 46 307 42 57 215 0 25 214 21 25 193 42 27 20 23 27 274 50 0 273 77 0 257 0 25 250 25 25

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)

31
31√2
20
10√2
15
10
5√2
35
11
30
21
21√2
19
2√2
27√2
27
25
25√2