如何用纯几何法证明共焦点椭圆、双曲线的这一光学性质? 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 theseCross, Margarita, Bags, Plumber, Telescope, Glasses, Mill, Drop spindle, Forge, Tree trimmer, 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 #4685 Dave Mustaine by Erika Ishikawa


anonymous
anonymous
sketch #1068 dançando


anonymous
anonymous
sketch #4595 Hell Boy by Cristina Love


anonymous
anonymous
sketch #1216


anonymous
anonymous
sketch #3908 Rawr! by Timothy Palfreyman


anonymous
anonymous
sketch #4975 Orange by Marcos Roberto Molina


anonymous
anonymous
sketch #303


anonymous
anonymous
sketch #3599 Lovely pencil face


anonymous
anonymous
sketch #313 Uchiha Sasuke


anonymous
anonymous
sketch #961


anonymous
anonymous
sketch #4835 L from Death Note by Adidtzu Ady


anonymous
anonymous
sketch #3420


anonymous
anonymous
sketch #2895 Hulk by Dmitry Cherepanin


Cherie N Patanao
sketch #1043 Deadoo..


BaGaz Anggara
sketch #2836 Angry smurf maradona by BaGaz Anggara


anonymous
anonymous
sketch #3083 Great illustration Ali Hänel


Raisa Mahmud
sketch #2061


anonymous
anonymous
sketch #3398 Sharingan by حيرتني بصمتها


anonymous
anonymous
sketch #5162 Alien by KiNg Buamir


愛君
sketch #1964 愛鼠繪


Karim Tayyeby
sketch #2744 Burce Lee by Karim Tayyeby


anonymous
anonymous
sketch #5064


Tom Kelly
sketch #124 saurez


anonymous
anonymous
sketch #828 Were Fools


James Forest
sketch #2996 American Flag


Donara Smbatyan
sketch #1449 donara

tomski如何用纯几何法证明共焦点椭圆、双曲线的这一光学性质? 知乎 coloring