Talk:Triangle

This is the talk page for discussing improvements to the Triangle article. This is not a forum for general discussion of the subject of the article.

Add new text under old text. New to Wikipedia? Welcome! Learn to edit; get help. Start a new topic Assume good faith Be polite and avoid personal attacks Be welcoming to newcomers Seek dispute resolution if needed Article policies Neutral point of view No original research Verifiability

Archives (index): 1, 2Auto-archiving period: 2 years

	Triangle is a former featured article. Please see the links under Article milestones below for its original nomination page (for older articles, check the nomination archive) and why it was removed.
	This article appeared on Wikipedia's Main Page as Today's featured article on May 14, 2004.
Article milestones Date Process Result May 5, 2004 Featured article candidate Promoted February 25, 2005 Featured article review Demoted January 4, 2006 Good article nominee Listed January 17, 2006 Good article reassessment Delisted April 1, 2015 Articles for deletion Speedily kept April 1, 2018 Articles for deletion Kept April 1, 2019 Articles for deletion Speedily kept Current status: Former featured article

This  level-3 vital article is rated C-class on Wikipedia's content assessment scale. It is of interest to multiple WikiProjects.

Mathematics Top‑priority This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics Top This article has been rated as Top-priority on the project's priority scale.

Triangles, particularly when associated with the Eye of Providence, are frequently cited in conspiracy theories. The triangle symbol is often linked to secret societies, occult practices, and global conspiracies. Here are a few examples of how triangles feature in conspiracy theories:

1. The Illuminati and the Eye of Providence

• The most famous association of the triangle in conspiracy theories is with the Illuminati, a purported secret society believed by conspiracy theorists to control world events. The Eye of Providence, an eye enclosed within a triangle, is often claimed to be the symbol of the Illuminati, representing their omnipresent surveillance and influence over global affairs. This symbol’s appearance on the U.S. one-dollar bill adds to the mystique and speculation surrounding it.

2. Freemasonry

• The triangle also features prominently in Masonic symbolism. The triangle, often referred to as the “Delta” in Freemasonry, represents the Deity and divine illumination. The use of this symbol in Masonic rituals and architecture has led to various conspiracy theories suggesting that Freemasons wield significant, covert influence over world governments and organizations.

3. Pyramids and Ancient Mysteries

• Pyramids, which are essentially three-dimensional triangles, are frequently cited in theories about ancient aliens, lost civilizations, and mystical powers. Some theorists argue that pyramids are energy sources or communication devices built by ancient civilizations with knowledge far beyond their time, possibly with extraterrestrial assistance.

4. The Trilateral Commission

• Another triangle-related conspiracy theory involves the Trilateral Commission, an organization founded in 1973 to foster cooperation among the U.S., Europe, and Japan. Conspiracy theorists claim that the three sides of the “triangle” in the organization’s name represent a triad of powerful entities seeking to establish a New World Order.

5. The Bermuda Triangle

• Although more of a mystery than a traditional conspiracy theory, the Bermuda Triangle has been the subject of numerous speculative ideas. Theories range from alien abductions to time warps, all centered around this triangular area in the Atlantic Ocean where ships and aircraft are said to have mysteriously disappeared.

6. Occult Symbolism

• Triangles are also a common motif in various occult practices and symbolism. Inverted triangles, triangles with eyes, or triangles intersected by lines are often interpreted as having mystical significance. Conspiracy theorists sometimes connect these symbols to rituals or groups believed to have secretive or malevolent agendas.

In summary, triangles have a deep-rooted presence in various conspiracy theories due to their symbolic associations with power, knowledge, and mysticism. Whether representing secret societies, ancient mysteries, or occult practices, the triangle remains a potent symbol in the world of conspiracy theories. Johnsosd (talk) 15:33, 11 August 2024 (UTC)Reply

Is this intended to be discussion about the Wikipedia article Triangle? Miscellaneous thoughts about triangles which are not directly relevant to the article are off topic and inappropriate here. –jacobolus (t) 20:17, 11 August 2024 (UTC)Reply

There seems to have been one or more puzzles included in the recently released Book of Bill (a novel related to the children's TV show Gravity Falls) whose answer(s) involved "triangle" and/or "eye of providence". This has caused a large number of Gravity Falls fans to come leave cryptic graffiti here in the past couple days. Please don't do that: it's not the purpose of Wikipedia talk pages. –jacobolus (t) 20:50, 11 August 2024 (UTC)Reply

Thank you for the clarification, Jacobolus. My intention was to contribute to the discussion by exploring an unusual geometric concept involving triangles with prime-numbered angles. I noted the recent influx of graffiti and appreciate the clarification on what might have motivated those posts. I now understand that my post may have veered off-topic for the specific focus of this Wikipedia talk page. I’ll be more mindful of the relevance of my contributions in the future. I appreciate your guidance.

This response maintains a respectful tone while acknowledging both your original intent and the context provided by the other user’s comment. Johnsosd (talk) 03:07, 12 August 2024 (UTC)Reply

To be clear, my "please don't do that" is directed at people leaving graffiti, which I don't think you were trying to do @Johnsosd.

I think the general theme of your comment could be turned to productive end, but comments here should be targeted toward improving the article Triangle rather than just talking about triangles. See WP:NOTFORUM and WP:TALK#USE. So for example, it might be reasonable to propose adding some section to the article about symbolic or mystical uses of triangles, or creating a new article focused on that topic. A section here would need to be reasonably concise, neutral, and well sourced. –jacobolus (t) 03:19, 12 August 2024 (UTC)Reply

Four different Unicode characters turn out to be redirects to this page: 🔽, 🔼, 🔺, and 🔻. The total monthly view count for all of these is less than 100. Accordingly, spending hatnote space on them seems like a waste of screen real estate. Redirects are supposed to help with searches, and hatnotes are supposed to help people confused by their searches taking them to the wrong place, but going by the next-to-nothing view counts, nobody is actually getting confused here.

I am also not convinced that "triagonal" is a sufficiently common synonym for space diagonal that it needs to be listed here. It seems to be a niche-within-a-niche term, used by a very small number of recreational mathematics people. The disambiguation notice looks like the only hatnote worth keeping. XOR'easter (talk) 22:41, 1 September 2024 (UTC)Reply

I can't find any examples of "triagonal" meaning diagonal of a polyhedron. I'd dump the hatnote. –jacobolus (t) 00:45, 2 September 2024 (UTC)Reply

As for unicode symbols: these probably should redirect to a page listing the relevant unicode block rather than here to triangle. In general having 🔓 redirect to Lock and key, 👣 redirect to Footprint, 👵 redirect to Old age, 🍕 redirect to Pizza, etc. seems like a misuse of the redirect feature, and likely to be generally unhelpful to readers. It would be better if these all redirected to some page about unicode symbols, japanese telephone emojis, or the like, with links to topics relevant to each picture listed in a table there. –jacobolus (t) 00:50, 2 September 2024 (UTC)Reply

I’ve just added a hatnote for 🔻 and 🔺 unaware that this discussion had taken place. Now, that almost nobody uses the emojis in the search field doesn’t seem like a great argument against having any explanatory hatnotes—if anything, it would be a good reason to delete the redirect altogether. As long as the redirect exists and red triangles are often used with various symbolism, I suggest we either keep the hatnote or change the redirect to point to the disambiguation page Red triangle (listing the different meanings). ~ IvanScrooge98 (talk) 14:31, 29 March 2025 (UTC)Reply

This article has been viewed enough times in a single week to appear in the Top 25 Report. The week in which this happened: August 11 to 17, 2024

I'm putting this banner in an ordinary comment. I don't think there's much benefit to putting it at the top of the page and preventing it from being archived. Summary: in the past month Triangle and Eye of providence got about 1.5 million extra views each, weighted toward the first few days, based on their association with a website related to a new Gravity Falls book. During that time this talk page was vandalized a couple dozen times by Gravity Falls fans leaving graffiti, leading to temporary extra editing protection. –jacobolus (t) 03:19, 6 September 2024 (UTC)Reply

It says that the Schlafi symbol is {3}, but I'm not sure if this should be put here because it specifically says that this is only for equilateral triangles. Thoughts?

VidanaliK (talk) 00:20, 10 December 2025 (UTC)Reply

There is precedent for only putting a Schläfi symbol on regular versions of a triangle on Pentagon. VidanaliK (talk) 00:29, 10 December 2025 (UTC)Reply

@VidanaliK. A Schlafli symbol is a notation for a regular polytopes and tessellation. Since the article talks about triangles in general form, it is not necessarily needed. Dedhert.Jr (talk) 02:00, 10 December 2025 (UTC)Reply

Thanks! VidanaliK (talk) 02:07, 10 December 2025 (UTC)Reply

I think this may just be a typo. In the intro the line segments that make up a triangle are referred to as sides also called edges. But later in the first para. of the Definition, terminology, and types section the article states

and the endpoints or corners are called the edges. 

I think that the word edges should be the word vertices instead. The material in the footnote doesn't call them edges. So, I think the footnoted reference can stand. Its just that one word change is needed. Thanks for considering! Kmk4wiki (talk) 15:01, 19 May 2026 (UTC)Reply

Yeah, a typo. I fixed it. McKay (talk) 05:46, 20 May 2026 (UTC)Reply