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--><-- terminology contradicts itself and is inconsistent[edit]


  Diameter: a line segment ... which passes through the centre;
  Semicircle: ... it may mean the diameter, arc, and its interior, a ... region, that is technically called a half-disc.

So a half-disc contains a diameter which contains the centre.


  Segment: a region, not containing the centre ...

thus the following quote is contradictory:

  A half-disc is a ...  segment ...

So, is it not the case that the centre can be in a segment?

Perhaps the wording should be:

  A half-disc is a ...  sector ... 

Maybe qualifying this with the fact that this special case means that the major and minor sectors are indistinguishable when the sector's two radii are colinear and form a diameter?

(must disqualify the pathological case where the radii are also coincident as well as colinear in which case the major and minor sectors are distinct)

PS. This begs the question: What is the remainder of a circle, disc, called when a segment is removed?

鈥斅燩receding unsigned comment added by (talk) 21:07, 19 March 2019 (UTC)Reply[reply]

Hopefully, I took care about this. Purgy (talk) 09:14, 20 March 2019 (UTC)Reply[reply]


The angle a circle curves at should be infinitely small because it has no sides, even though it curves and is angled. 鈥斅燩receding unsigned comment added by Aether101 (talkcontribs) 16:55, 20 March 2019 (UTC)Reply[reply]

A circle has no angle; it has a curvature. However, this is not described in the article and probably should be.鈥Anita5192 (talk) 17:10, 20 March 2019 (UTC)Reply[reply]

Semi-protected edit request on 28 March 2019[edit] (talk) 07:01, 28 March 2019 (UTC)Reply[reply]
Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. 鈥 脼jarkur (talk) 10:46, 28 March 2019 (UTC)Reply[reply]


please change ((ring)) to ring

Not done: I'm not seeing what it is you want changed. Highway 89 (talk) 15:17, 3 August 2019 (UTC)Reply[reply]
聽Done In the last sentence of the article the term "ring" was improperly linked to a disambiguation page and this may be the issue of concern. I revised the entire sentence and this issue has disappeared. --Bill Cherowitzo (talk) 18:48, 3 August 2019 (UTC)Reply[reply]

Why not 600掳?[edit]

Why not 600掳? Bhavyar19 (talk) 05:39, 11 April 2020 (UTC)Reply[reply]

@Bhavyar19:Your question would be more appropriate at Talk:Degree (angle), but read Degree (angle) first.鈥Anita5192 (talk) 06:45, 11 April 2020 (UTC)Reply[reply]
@Bhavyar19 and Anita5192: the question would not be appropriate on any article talk page. On article talk pages we can only discuss the article, not the subject鈥攕ee wp:Talk page guidelines. The only place to (perhaps) go with this, if at all, is the wp:Reference desk/Science. Cheers. - DVdm (talk) 09:32, 11 April 2020 (UTC)Reply[reply]

Compute Circle from 3 points[edit]

I recently had to figure out the details of a circle given 3 points, and I was unable to find what I was looking for on Wikipedia. Would there be a section here I could add some information to, or perhaps a better page somewhere? I have a neat browser demo: Midas7g talk 14:24, 16 December 2020 (UTC)Reply[reply]

The circle from east to west[edit]

For the "Significance in art and symbolism" section, Jean-Fran莽ois Charnier is cited as the author of the article "The circle from east to west". Mr. Jean-Fran莽ois Charnier is the editor of the Book "The Louvre Abu Dhabi: A World Vision of Art, October 29, 2019" and not the writer of that article.

the author of the article is: Dr. Yahya Abdullahi. 鈥斅燩receding unsigned comment added by Yahyaabdullahi (talkcontribs) 19:48, 1 April 2021 (UTC)Reply[reply]

Fixed that, new citation is
Abdullahi, Yahya (October 29, 2019). "The Circle from East to West". In Charnier, Jean-Fran莽ois (ed.). The Louvre Abu Dhabi: A World Vision of Art. Rizzoli International Publications, Incorporated. ISBN9782370741004.
Hope that's OK.--Salix alba (talk): 19:11, 1 April 2021 (UTC)Reply[reply]

Semi-protected edit request on 18 August 2021[edit]

Circle word origin is more likely from the sanskrit or indian language - chakra or chakram. Source can be found in the wikipedia page on chakram. Thelotuseaters (talk) 06:31, 18 August 2021 (UTC)Reply[reply]

Not done: please provide reliable sources that support the change you want to be made. 鈥撯饾棛饾椉饾椏饾椇饾棶饾椆饾棗饾槀饾棻饾棽 talk 06:34, 18 August 2021 (UTC)Reply[reply]

"馃敶" listed at Redirects for discussion[edit]

Information.svg An editor has identified a potential problem with the redirect 馃敶 and has thus listed it for discussion. This discussion will occur at Wikipedia:Redirects for discussion/Log/2022 February 11#馃敶 until a consensus is reached, and readers of this page are welcome to contribute to the discussion. theleekycauldron (talkcontribs) (she/they) 04:21, 11 February 2022 (UTC)Reply[reply]

The distance between any point of the circle and the centre is called the radius.[edit]

I see this lead sentence dubious because circle is probably of two elements: round (kru啪nica) and surface (both define circle at same time). It contains infinite number of points. Radius would be distance from circle's round to center. -- (talk) 20:12, 29 June 2022 (UTC)Reply[reply]