tetrahedron

/tɛtɹəˈhiːdɹən/

Meanings

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.

Examples :

"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。

math structure

Related Words

equilateral noun

/ˌiːkwɪˈlætərəl/ /ˌɛkwɪˈlætərəl/

等边，均等边。

"The math teacher explained that an equilateral triangle has three sides that are the same length. "

数学老师解释说，一个等边三角形的三条边长度都一样。

project noun

/ˈprɒdʒɛkt/ /prəˈdʒɛkt/

项目，工程。

"The school's fundraising project aims to renovate the library in several stages. "

学校的筹款项目计划分阶段翻新图书馆。

equal noun

/ˈiːkwəl/

平等的人，同等地位的人.

"This beer has no equal."

这啤酒独一无二，没有能和它相提并论的。

platonic adjective

/pləˈtɒnɪk/ /pləˈtɔnɪk/

柏拉图式的，精神上的。

"The professor's lecture focused on platonic ideas about the ideal society. "

这位教授的讲座重点讲解了柏拉图关于理想社会的精神理念。

geometry noun

/dʒiːˈɒmɪtɹi/ /dʒiˈɑmətɹi/

几何，几何学

"My son is learning about geometry in his math class, studying how shapes relate to each other in space. "

我儿子正在数学课上学习几何，研究各种形状在空间里的相互关系。

student noun

/ˈstjuː.dənt/ /ˈstu.dn̩t/

学生，学员

"He is a student of life."

他是一个在人生中不断学习的人。

which pronoun

/wɪt͡ʃ/

哪个，哪些

"By now, you must surely know which is which."

到现在，你肯定应该知道哪个是哪个了吧。

polyhedron noun

/pɒliˈhiːdɹən/

多面体，多面形。

"The teacher showed us a colorful polyhedron with triangles and squares for faces. "

老师给我们展示了一个色彩鲜艳的多面体，它的各个面由三角形和正方形构成。

solids noun

/ˈsɑlɪdz/ /ˈsɒlɪdz/

固体，固态物。

"The desk and chair in the classroom are made of solids. "

教室里的桌子和椅子是用固体材料做的。

regular noun

/ˈɹɛɡjʊlə/ /ˈɹɛɡjəlɚ/

正规军，正规部队.

"The sergeant major is a regular in the British Army. "

这位军士长是英国陆军的正规军。

faces noun

/ˈfeɪsɪz/

脸, 面容

"That girl has a pretty face."

那个女孩长着一张漂亮的脸。

triangles noun

/ˈtraɪæŋɡəlz/ /ˈtraɪæŋɡəls/

三角形

"The art teacher asked the students to draw different shapes, including triangles. "

美术老师让学生们画不同的形状，包括三角形。