'tetrahedron' 的视觉含义？ - 通过图片学习，日常生活中的例子

的视觉插图 tetrahedron: 四面体

noun

四面体

A polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.

"The student built a model of a tetrahedron for her geometry project, using four equilateral triangles to form its faces. "

这位学生为了她的几何项目制作了一个四面体模型，用了四个等边三角形来构成它的各个面。