### equilateral

• n. 等边形
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equilateral 等边的

equ-, 平等，相等。-later, 边，见lateral.

"having all sides equal," 1560s, from Late Latin aequilateralis, from aequi- (see equal (adj.)) + lateralis (see lateral). Related: Equilaterally.
1. Use your protractor to construct an equilateral triangle.

2. The angles are equal, for ABC is equilateral.

3. Its outline roughly forms an equilateral triangle.

4. An equilateral triangle cannot be dissected into finitely many incongruent equilateral triangles.

5. Each face is an equilateral triangle and three faces meet at each vertex.