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1·Its outline roughly forms an equilateral triangle.

它的大致轮廓是一个等边三角形。《柯林斯英汉双解大词典》

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

三角相等，因为三角形abc是等边三角形。

3·A tetrahedron with four equilateral triangular faces.

有四个等边三角形面的四面体。

4·Use your protractor to construct an equilateral triangle.

用量角器作一个等边三角形。

5·An icosahedron with twenty equilateral triangles as faces.

有二十个正三角形面的二十面体。

6·Equilateral pyramid, concise power, an impulsive force of view.

等边金字塔，简洁有力，视觉冲击力很强。

7·It is called Equilateral triangle that a triangle has equal legs.

三条边都相等的三角形叫做等边三角形。

8·Diagram 3 consists of several equilateral triangles of equal size.

图3是由同样大小的等边三角形所组成的。

9·Butterfly Mechanism consists of two congruent equilateral triangles.

蝶形单元是由两个全等的三角形组成。

10·For example, the triangle values 2, 2, 2 and 3, 3, 3 are both equilateral.

例如，三角形的三条边分别是2,2,2和3,3,3，它们都是等边三角形。

(1)equilateral triangle等边三角形