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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:312AA GHM

Order: 18

Horizontal side: 312 Vertical side: 312

Elements: 4, 36, 28√2, 36√2, 39√2, 56, 46√2, 74, 76, 78, 56√2, 82, 76√2, 78√2, 152, 160, 117√2, 156√2.

Code: 1607 0 312 766 84 236 1527 160 312 1566 156 156 566 28 180 765 84 160 286 0 152 565 28 124 365 84 124 364 120 124 823 156 78 47 156 160 392 195 117 745 0 78 464 74 78 1170 195 117 785 0 0 784 78 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)

160
76√2
152
156√2
56√2
76
28√2
56
36
36√2
82
4
39√2
74
46√2
117√2
78
78√2