a polyhedron; pyramid
Tone colorsmāmámǎmàma
Meanings
1 sense · 4 examplesnoun
pyramid; a polyhedron formed by a polygonal base and triangular faces with a common vertex
technicalIn geometry, the most common example is a triangular pyramid (tetrahedron) or a square pyramid. Informally called a 'pyramid' in English.
Zhè这
gè个
lì立
tǐ体
mó模
xíng型
shì是
yī一
gè个
zhèng正
wǔ五
léng棱
zhuī锥
。
This 3D model is a regular pentagonal pyramid.
Jì计
suàn算
léng棱
zhuī锥
de的
tǐ体
jī积
xū需
yào要
zhī知
dào道
dǐ底
miàn面
jī积
hé和
gāo高
。
Calculating the volume of a pyramid requires knowing the base area and the height.
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Zài在
gǔ古
Āi埃
jí及
，
jù巨
dà大
de的
sì四
léng棱
zhuī锥
jiàn建
zhù筑
bèi被
chēng称
wéi为
jīn金
zì字
tǎ塔
。
In ancient Egypt, massive four-sided pyramids were called pyramids.
Léng棱
zhuī锥
de的
cè侧
miàn面
dōu都
shì是
sān三
jiǎo角
xíng形
。
All the lateral faces of a pyramid are triangles.