equilateral triangle
1
3.2
- noun
- /ˌiːkwɪˈlætərəl ˈtraɪæŋɡəl/
:
triángulo equilátero
- Creating a triangle using the above methods will always result in an equilateral triangle (with all sides of equal length and all three angles at 60 degrees).
- form an equilateral triangle
Examples
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Between the yellow man and the black woman, meanwhile, the scenes of the second act (with one, two, and three dancers, respectively) together form an equilateral triangle, a visual triad symbolizing the ballet's overall schema.
Academic text (2003) -
The interior angle of an equilateral triangle measures 60 degrees.
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An equilateral triangle has three equal sides.
Academic text (2009) -
Students arrive in the classroom and find an equilateral triangle drawn on the board.
Academic text (2004) -
Such standardized data can be plotted on an equilateral triangle (Fig. 2).
Academic text (1994) -
An equilateral triangle has three sides that are all the same length.
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Students discovered an equilateral triangle sketched on the classroom whiteboard.
Synonyms
1
5.1
A triangular shape with all sides the same length
A triangle with three equal angles, each 60 degrees
How Equal
Surface Forms
Morphology
The phrase is directly compositional: 'equilateral' specifies 'equal sides' and 'triangle' is a three-sided figure, so a learner who knows both words can infer a triangle with all sides equal (and thus equal angles). This pattern is cross-linguistically common in geometric terminology and follows standard adjective+noun composition, making it immediately understandable to a B1 learner.
Etymology
Equilateral triangle comes from a simple, literal idea: equilateral means 'equal sides', so an triangle with all three sides the same length has all angles equal.