diameter

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AI overview

A diameter is a straight line that passes through the center of a circle and connects two points on the circle's edge. It's useful because it's the longest distance across a circle and helps define the circle's size—the diameter is exactly twice the radius (the distance from the center to the edge).

AI-generated from the Wikipedia summary — may contain errors.

In the Vinony graph

Within Vinony's link graph, diameter is referenced by 3,347 other articles, and connects out to parallelogram, question mark and compass and straightedge construction.

Vinony files it under Circles, Elementary geometry and Length.

Its subject is documented across 108 Wikipedia language editions.

Key facts

Symbol.sign: ⌀
Symbol.name: Diameter sign

via Wikipedia infobox

Wikidata facts

Image: Diameter-2-ubt.svg

Show 2 more facts

Unicode character: ⌀
Commons gallery: Diameter

Sources (4)

via Wikidata · CC0

~4 min read

Encyclopedic overview

5 sections

Contents

Constructions
Symbol
Generalizations
See also
References

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In geometry, a diameter of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere.

Excerpted from Wikipedia’s “diameter” article, available under the CC BY-SA 4.0 licence.