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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:178AL GHM

Order: 19

Horizontal side: 178 Vertical side: 178

Elements: 4, 4√2, 10√2, 20, 20√2, 30, 26√2, 41, 30√2, 49, 52, 41√2, 70, 52√2, 74, 78, 59√2, 63√2, 74√2.

Code: 745 0 104 744 74 104 703 148 108 307 148 178 306 148 148 202 168 128 203 168 108 102 178 118 596 119 59 43 78 104 412 119 67 411 119 108 497 119 108 522 52 52 781 78 104 46 115 63 630 115 63 523 52 0 262 78 26

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)

74
74√2
70
30
30√2
20√2
20
10√2
59√2
4
41√2
41
49
52√2
78
4√2
63√2
52
26√2