[[구,sphere]] [[구면,sphere]] 중 TBD. kms는 그냥 구이긴 한데
아님 [[구면,spherical_surface]]?


[[https://terms.naver.com/entry.naver?docId=1066056&cid=40942&categoryId=32223 두산백과: 구면 spherical surface]]
직교좌표 [[공간,space]]([[유클리드_공간,Euclidean_space]]) 안에서 [[점,point]] $(a,b,c)$ 을 [[중심,center]]으로 하고 [[반지름,radius]]이 $r$ 인 '''구(sphere)'''의 [[방정식,equation]]은
 $(x-a)^2+(y-b)^2+(z-c)^2=r^2$
이다.

[[WpKo:구_(기하학)]] = https://ko.wikipedia.org/wiki/구_(기하학)
[[MathWorld:Sphere]] = https://mathworld.wolfram.com/Sphere.html
[[WpSp:Sphere]] = https://simple.wikipedia.org/wiki/Sphere
[[WpEn:Sphere]] = https://en.wikipedia.org/wiki/Sphere
[[WpJa:球面]] = https://ja.wikipedia.org/wiki/球面

Cmp: [[원,circle]] ... [[차원,dimension]]에 따라 명칭이 달라짐: 원은 2D, '''구'''는 3D, [[hypersphere]]는 ''n''D ...  (둘 다 한 [[점,point]]을 기준으로 [[거리,distance]]가(=[[반지름,radius]]이) 같은 점들의 집합)
Cmp: [[공,ball]]

Extension? Generalization? : [[hypersphere]] 하이퍼구(면) or 초구(면) KmsE:hypersphere NdEn:hypersphere Ndict:hypersphere Ggl:hypersphere MathWorld:Hyperphere ?

Up: [[셰이프,shape]]
Up: 면, 곡면 - [[곡면,surface]]

spherical_geometry [[spherical_geometry]]
 [[WtEn:spherical_geometry]] = https://en.wiktionary.org/wiki/spherical_geometry
 spherical geometry
 "spherical geometry"
 Ndict:"spherical geometry"
 Ggl:"spherical geometry"
spherical_coordinate [[spherical_coordinate]]
 WtEn:spherical_coordinate x [[Date(2023-11-05T06:50:14)]] ... https://en.wiktionary.org/wiki/spherical_coordinates 는 있음...
 spherical coordinate
 "spherical coordinate"
 Ndict:"spherical coordinate"
 Ggl:"spherical coordinate"
spherical_coordinate_system [[spherical_coordinate_system]] WtEn:spherical_coordinate_system
 spherical coordinate system
 https://ko.wikipedia.org/wiki/구면좌표계
 https://en.wikipedia.org/wiki/Spherical_coordinate_system
 https://simple.wikipedia.org/wiki/Spherical_coordinate_system
 https://ja.wikipedia.org/wiki/球面座標系
 Ndict:"spherical coordinate system"
 Ggl:"spherical coordinate system"

spherical_
spherical_




KmsE:spher = https://www.kms.or.kr/mathdict/list.html?key=ename&keyword=spher 2023-11-06 현재 82개
Up: [[껍질,shell]]

껍질뿐 아니라 내부까지 포함하면, [[공,ball]].