noun
EXAMPLES FROM CORPUS
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The equilateral triangle already proclaimed the magic of 3.
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The simplest polygon is the equilateral triangle which echoes itself at 60° intervals.
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The tetrahedron has four faces, each an equilateral triangle .
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The Vesica piscis On the diameter of a circle an equilateral triangle is described centrally such that its apex just touches the circumference.
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These two lie close together, and make up an equilateral triangle with Zeta Puppis and Lambda Velorum.