Template:Did you know nominations/Heronian tetrahedron

The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.

The result was: promoted by Yoninah (talk) 19:08, 16 March 2020 (UTC)

Heronian tetrahedron

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... that any tetrahedron that has integer edge lengths, face areas, and volume can be given integer vertex coordinates? Source: [1]

Reviewed: Cadamosto Seamount

5x expanded by David Eppstein (talk). Self-nominated at 00:27, 1 March 2020 (UTC).

General: Article is new enough and long enough
New enough: Long enough:

Policy: Article is sourced, neutral, and free of copyright problems
Adequate sourcing: Neutral: Free of copyright violations, plagiarism, and close paraphrasing:

Hook: Hook has been verified by provided inline citation
Cited: Interesting:

QPQ: Done.

Overall:

Over 5x expansion. Neutral with a good range of sources. Earwig shows 20% for one source but this does not look problematic - it's a short section about edge lengths, which possibly got to the other source by being copied from Wikipedia initially. QPQ was completed. BennyOnTheLoose (talk) 12:02, 5 March 2020 (UTC)