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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:312AH GHM

Order: 19

Horizontal side: 312 Vertical side: 312

Elements: 8, 8√2, 14, 16, 14√2, 24, 28, 21√2, 28√2, 66, 50√2, 90, 66√2, 90√2, 132, 156, 111√2, 180, 156√2.

Code: 1805 0 132 1564 156 156 1563 312 156 241 180 156 165 180 140 664 246 90 663 312 90 85 180 132 84 188 132 500 196 140 1327 0 132 216 111 111 285 132 104 284 160 104 1110 111 111 145 132 90 144 146 90 904 222 0 903 312 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)

180
156√2
156
24
16
66√2
66
8
8√2
50√2
132
21√2
28
28√2
111√2
14
14√2
90√2
90