椭圆的第一定义如何推出第二定义(纯几何,不借助坐标系也不升到三维空间)? 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 theseMission, Crew cut, Earthquake, Secret code, Jazz band, Sunglasses, Hod, Catfish, Giant, Dork, 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 #2070


anonymous
anonymous
sketch #4151


anonymous
anonymous
sketch #5116 Bleach by Vrushali Rane


anonymous
anonymous
sketch #5068


anonymous
anonymous
sketch #5122


Fabio Sala
sketch #2672


sketchmaster
sketch #2613


anonymous
anonymous
sketch #5086 Lion by Z Ionut Ady


anonymous
anonymous
sketch #3300


anonymous
anonymous
sketch #5128 Italo Italo Abreu Jack Supple


anonymous
anonymous
sketch #5281


anonymous
anonymous
sketch #5151


anonymous
anonymous
sketch #4891 Pikachu by Resul Danacı


anonymous
anonymous
sketch #5303


anonymous
anonymous
sketch #4661 Woodpecker by Hsien-Ying Hsieh


anonymous
anonymous
sketch #4885


Jaroslav Florian
sketch #135 TYGER Style


anonymous
anonymous
sketch #5168


Ariel Fernando
sketch #1061 garota ao vento


anonymous
anonymous
sketch #3716


El Harouati Nassera
sketch #2810 Lennon by El Harouati Nassera


anonymous
anonymous
sketch #5438


anonymous
anonymous
sketch #3457


anonymous
anonymous
sketch #21085 Tobirama by Enrique L. Manly


anonymous
anonymous
sketch #4736 Naruto by Wellen Lima


anonymous
anonymous
sketch #1168


anonymous
anonymous
sketch #4903 Naruto & Kurama by Fatér Szilvia


anonymous
anonymous
sketch #3071 Metallica - Kill &#;Em All by Dayana Aleman

tomski椭圆的第一定义如何推出第二定义(纯几何,不借助坐标系也不升到三维空间)? 知乎 coloring