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the claim
In an equilateral triangle, all three sides have equal length and all three angles are equal to 60 degrees.
the verdict
SUPPORTED
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5 sources for · 0 against
AS REPORTEDno primary record reached; this is what the reporting says
Is it true that in an equilateral triangle, all three sides have equal length and all three angles are equal to 60 degrees?
Yes. By definition, an equilateral triangle is a geometric figure possessing three sides of equal length and three interior angles each measuring 60 degrees.
Verdict: SUPPORTED · 5 sources for, 0 against · Last checked
How claims like this are judged
Judged against reference works: claims of this kind are settled by reference works, not journal abstracts.
Evidence for · 5
Reference article covering this claim directly
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Wikipedia: Equilateral triangle. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Equilateral_triangle
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More for · 4
Confirms all three sides and all three angles of an equilateral triangle are equal.
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LibreTexts: LibreTexts: 7.02%3A Triangles. (n.d.). LibreTexts. https://math.libretexts.org/Courses/San_Joaquin_Delta_College/Technical_Mathematics_SJDC_1/07%3A_Trigonometry/7.02%3A_Triangles
Mentions that equal angles in the triangle lead to equal sides, specifically referencing 60 degrees.
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OpenStax: OpenStax Precalculus: 5.2 Unit Circle: Sine and Cosine Functions. (n.d.). OpenStax. https://openstax.org/books/precalculus/pages/17a6d7f5-c90c-4047-abac-0376d582549b@
Explicitly notes that an equilateral triangle has three equal sides and all angles equal to 60 degrees.
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Wikibooks: Wikibooks: Mathematics Foundations/13.2 Triangles and Polygons. (n.d.). Wikibooks. https://en.wikibooks.org/wiki/Mathematics_Foundations/13.2_Triangles_and_Polygons
Notes that an equilateral triangle has three equal sides and is equiangular.
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Wikisource: Wikisource: 1911 Encyclopædia Britannica/Triangle (geometry). (n.d.). Wikisource. https://en.wikisource.org/wiki/1911_Encyclopædia_Britannica/Triangle_(geometry)
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