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2. Diameter - Wikipedia

   en.wikipedia.org/wiki/Diameter

   Both definitions are also valid for the diameter of a sphere. In more modern usage, the length d {\displaystyle d} of a diameter is also called the diameter. In this sense one speaks of the diameter rather than a diameter (which refers to the line segment itself), because all diameters of a circle or sphere have the same length, this being ...

3. Diameter of a set - Wikipedia

   en.wikipedia.org/wiki/Diameter_of_a_set

   In graph theory, the diameter of a connected undirected graph is the farthest distance between any two of its vertices. That is, it is the diameter of a set, for the set of vertices of the graph, and for the shortest-path distance in the graph. Diameter may be considered either for weighted or for unweighted graphs.

4. Diameter (disambiguation) - Wikipedia

   en.wikipedia.org/wiki/Diameter_(disambiguation)

   Diameter (graph theory), the longest distance between two vertices of a graph; Diameter (group theory), the maximum diameter of a Cayley graph of the group; Equivalent diameter, the diameter of a circle or sphere with the same area, perimeter, or volume as another object; Hydraulic diameter, the equivalent diameter of a tube or channel for fluids

5. Elementary mathematics - Wikipedia

   en.wikipedia.org/wiki/Elementary_mathematics

   Elementary mathematics, also known as primary or secondary school mathematics, is the study of mathematics topics that are commonly taught at the primary or secondary school levels around the world. It includes a wide range of mathematical concepts and skills, including number sense , algebra , geometry , measurement , and data analysis .

6. Diameter (computational geometry) - Wikipedia

   en.wikipedia.org/wiki/Diameter_(computational...

   The diameter is the maximum distance between any pair of convex hull vertices found as the two points of contact of the parallel lines in this sweep. The time for this method is dominated by the time for constructing the convex hull: O ( n log ⁡ n ) {\displaystyle O(n\log n)} for a finite set of n {\displaystyle n} points, or time O ( n ...

7. Circle - Wikipedia

   en.wikipedia.org/wiki/Circle

   Given a chord of length y and with sagitta of length x, since the sagitta intersects the midpoint of the chord, we know that it is a part of a diameter of the circle. Since the diameter is twice the radius, the "missing" part of the diameter is (2r − x) in length.

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9. Conjugate diameters - Wikipedia

   en.wikipedia.org/wiki/Conjugate_diameters

   A diameter of one hyperbola is conjugate to its reflection in the asymptote, which is a diameter of the other hyperbola. As perpendicularity is the relation of conjugate diameters of a circle, so hyperbolic orthogonality is the relation of conjugate diameters of rectangular hyperbolas.