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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:125AC GHM

Order: 18

Horizontal side: 125 Vertical side: 125

Elements: 5√2, 10, 14, 10√2, 15, 14√2, 20, 21, 28, 20√2, 21√2, 28√2, 49, 50, 55, 56, 55√2, 90.

Code: 907 0 125 200 90 125 201 110 125 102 120 115 151 125 125 103 120 105 52 125 110 556 70 55 563 70 49 507 70 105 555 70 0 146 0 35 285 14 21 284 42 21 493 70 0 145 0 21 215 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)

90
20√2
20
10√2
15
10
5√2
55√2
56
50
55
14√2
28
28√2
49
14
21
21√2