In 1999, Monckton created and published the Eternity puzzle, a geometric puzzle that involved tiling a dodecagon with 209 irregularly shaped polygons called " polydrafters ".
12.
The 1000 lei coin was considered too small and was also cheaply made, and the 5000 lei coin was not circular ( it was a dodecagon ).
13.
Beyond decagons ( 10-sided ) and dodecagons ( 12-sided ), mathematicians generally use numerical notation, for example 17-gon and 257-gon.
14.
The dodecagrammic antiprism, s { 2, 24 / 5 } and dodecagrammic crossed-antiprism, s { 2, 24 / 7 } also have regular skew dodecagons.
15.
The largest tower, which contains the helical lift hill, is a dodecagon, 25 feet across and 92 feet high while the maximum drop of the ride is 86 feet.
16.
I guess what I am really looking for is something like a Penrose tiling of the plane in a rotating 4D analog, with pentagonal faces being dodecagons, or the like.
17.
These " Points Of Contention " ( POCs ), represented by dodecagon, are captured by occupying them for a certain period of time ( ranging from 45 to 90 seconds ).
18.
Within the garden is a regular dodecagon shrine with an embedded memorial ( Roll of Honour and Plaque ) to those killed in Hong Kong during World War II ( 1941 1945 ).
19.
Thus rearranging the six green triangles, three blue triangles and three red triangles into a rectangle with width = 3, and height shows that the area of the dodecagon = 3.
20.
As the name implies this tiling is constructed by a truncation operation applies to a hexagonal tiling, leaving dodecagons in place of the original hexagons, and new triangles at the original vertex locations.
