A dial is said to be " equiangular " if its hour-lines are straight and spaced equally.
22.
On a stereographic projection map, a loxodrome is an equiangular spiral whose center is the North ( or South ) Pole.
23.
Thus if " n " is odd, a cyclic polygon is equiangular if and only if it is regular.
24.
Conversely, supposing the existence of a regular icosahedron, lines defined by its six pairs of opposite vertices form an equiangular system.
25.
However, other designs are equiangular, such as the Lambert dial, a version of the analemmatic dial with a moveable style.
26.
The body will spiral to infinity describing an equiangular spiral with the fixed angle equal to the angle at its point of release.
27.
With the same speed, if initially the radius is decreasing, it will spiral down to the centre describing an equiangular spiral.
28.
The shell, when cut away, reveals a lining of lustrous nacre and displays a nearly perfect equiangular spiral, although it is not a golden spiral.
29.
The small, regular triactines are equiangular, equiactinal sharp-pointed rays c . 56 ?m long and 5.6 ?m in diameter at the base.
30.
Conversely, any set of non-orthogonal equiangular lines in a euclidean space can give rise to a two-graph ( see equiangular lines for the construction ).
