185 (one hundred
ndeighty-five) is the
natural number
In mathematics, the natural numbers are the numbers 0, 1, 2, 3, and so on, possibly excluding 0. Some start counting with 0, defining the natural numbers as the non-negative integers , while others start with 1, defining them as the positive in ...
following
184 and preceding
186.
In mathematics
There are 185 different
directed graphs on four unlabeled vertices that have at least one sink vertex, with no outgoing edges, 185 ways of permuting the squares of a
grid of squares in such a way that each square is one unit away from its original position horizontally, vertically, or diagonally, and 185
matroid
In combinatorics, a matroid is a structure that abstracts and generalizes the notion of linear independence in vector spaces. There are many equivalent ways to define a matroid Axiomatic system, axiomatically, the most significant being in terms ...
s on five labeled elements in which each element participates in at least one basis.

The
Spiral of Theodorus
In geometry, the spiral of Theodorus (also called the square root spiral, Pythagorean spiral, or Pythagoras's snail) is a spiral composed of right triangles, placed edge-to-edge. It was named after Theodorus of Cyrene.
Construction
The spiral ...
is formed by unit-length line segments that, together with the center point of the spiral, form
right triangle
A right triangle or right-angled triangle, sometimes called an orthogonal triangle or rectangular triangle, is a triangle in which two sides are perpendicular, forming a right angle ( turn or 90 degrees).
The side opposite to the right angle i ...
s. 185 of these right triangles fit within the first four turns of this spiral.
See also
*
References
Integers
{{Num-stub