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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:178AO GHM

Order: 19

Horizontal side: 178 Vertical side: 178

Elements: 7√2, 9√2, 18, 18√2, 26, 26√2, 38, 27√2, 50, 36√2, 52, 38√2, 64, 50√2, 52√2, 76, 57√2, 64√2, 76√2.

Code: 765 0 102 764 76 102 260 152 178 261 178 178 520 126 152 521 178 152 385 0 64 384 38 64 360 74 100 274 101 73 186 110 82 507 128 100 506 128 50 96 101 73 185 110 64 645 0 0 644 64 0 76 121 57 570 121 57

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)

76
76√2
26√2
26
52√2
52
38
38√2
36√2
27√2
18√2
50
50√2
9√2
18
64
64√2
7√2
57√2