File:Cone_with_labeled_Radius,_Height,_Angle_and_Side_v2.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ42344· pop 106· linked from 795 articles

圆锥

幾何形狀

AI overview

A cone is a three-dimensional geometric shape with a circular base that tapers smoothly to a single point called the apex. Cones appear frequently in mathematics, engineering, and nature, making them important for understanding everything from basic geometry to real-world applications like traffic cones and ice cream cones.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Polyhedron.name: Cone
Polyhedron.image: Cone with labeled Radius, Height, Angle and Side.svg
Polyhedron.caption: A right circular cone with the radius of its base r, its height h, its slant height c and its angle θ.
Polyhedron.type: Solid figure
Polyhedron.faces: 1 circular face and 1 conic surface
Polyhedron.euler: 2
Polyhedron.symmetry: Orthogonal group|

via Wikipedia infobox

Wikidata facts

Subclass of: geometric primitive
Image: Cones geometrie.png

Show 5 more facts

used by: Dandelin spheres
has characteristic: volume
Commons category: Cones
studied by: solid geometry
maintained by WikiProject: WikiProject Mathematics

Sources (1)

wikidata.org

via Wikidata · CC0

Article · 中文

圓錐也称为圆锥体，是一种三维幾何體，是平面上一个圆以及它的所有切线和平面外的一个定点确定的平面围成的形体。圆形被稱为圆锥的底面，平面外的定点稱为圆锥的頂點或尖端，顶点到底面所在平面的距离称为圆锥的高。通常“圆锥”一词用来指代正圆锥，也就是圆锥顶点在底面的投影是圆心时的情况。正圆锥可以定义为一個直角三角形绕其中一條直角邊旋轉一周得到的几何体，这个直角三角形的斜边称为圆锥的母线。顶点在底面的投影不在圆心，这样的圆锥称为斜圆锥。正圆锥可以由平面截得到，斜圆锥则不能。倾斜平面截取圆锥面得到的几何形体叫做椭圆锥。

Abstract from DBpedia / Wikipedia · CC BY-SA