equilateral triangle
Noun
Meaning
a three-sided regular polygon
Source: WordNetSynonyms
Hypernyms
Hyponyms
Examples
An equilateral triangle is also a regular polygon with all angles measuring 60°.
A proof from Euclid's Elements that, given a line segment, an equilateral triangle exists that includes the segment as one of its sides.
An equilateral triangle has the same pattern on all 3 angles, an isosceles triangle has the same pattern on just 2 angles, and a scalene triangle has different patterns on all angles since no angles are equal.
By lengths of sides Triangles can be classified according to the lengths of their sides: *An equilateral triangle has all sides the same length.
Strominger, Yau, and Zaslow 1996 Monstrous moonshine main An equilateral triangle can be rotated through 120°, 240°, or 360°, or reflected in any of the three lines pictured without changing its shape.
For example, Euclid's first proposition showing how to construct an equilateral triangle given one side is usually shortened to QEF.