二维空间的封闭是圆,三维空间的封闭是球,四维空间的封闭是什么? 知乎 Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: zhihu.com






Try and sketch some of theseGuillotine, Poodle, Pumpkin, Rabbit, Coven, Rake, Llama, Great Dane, Crib, Columbine, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #4916


Loai Issa
sketch #2668 Butterfly by Loai Issa


anonymous
anonymous
sketch #5090


anonymous
anonymous
sketch #5258 Adventure Time by Kheith Ryan Lubiano


anonymous
anonymous
sketch #4549


anonymous
anonymous
sketch #5102 Old Man by Cuong Pham


anonymous
anonymous
sketch #3857


anonymous
anonymous
sketch #20215 Desert


anonymous
anonymous
sketch #4708 Katekyo Hitman Reborn by Mário JBudo


anonymous
anonymous
sketch #3273


anonymous
anonymous
sketch #4869 Madara by Jean-Benoit Renaud


anonymous
anonymous
sketch #961


anonymous
anonymous
sketch #1711


sketchmaster
sketch #2618


anonymous
anonymous
sketch #4742


anonymous
anonymous
sketch #5277 League of Legends champions by Sylvie Rieux


anonymous
anonymous
sketch #4362 cow


Raisa Mahmud
sketch #2061


anonymous
anonymous
sketch #4710


Donara Smbatyan
sketch #1449 donara


sketchmaster
sketch #2593 Tweety by sketchmaster


anonymous
anonymous
sketch #4937 Favorite animal competition runner-up: White Tiger by Deepak Kaushik


anonymous
anonymous
sketch #5222 Magic Art Tin Sheek


sketchmaster
sketch #2446 Joker by sketchmaster


anonymous
anonymous
sketch #5262


anonymous
anonymous
sketch #3063


anonymous
anonymous
sketch #3088 Billy from Saw by Naulian Ciko


anonymous
anonymous
sketch #5013 Pursuing Dreams by Mário JBudo


anonymous
anonymous
sketch #3192 Snake by Isaias Valenzuela Chaver

tomski二维空间的封闭是圆,三维空间的封闭是球,四维空间的封闭是什么? 知乎 coloring