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 theseBaseball diamond, Bags, Donut, Steam shovel, Giraffe, Crutches, Macaroni, Catamaran, Toast, Caboose, 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 #4383 4383


anonymous
anonymous
sketch #5228 Rin & Len by Mark Phillips


anonymous
anonymous
sketch #5219 Zayn Malik by Amila Madhushanaka


anonymous
anonymous
sketch #3716


anonymous
anonymous
sketch #4916


Zay Lin
sketch #3399 zay lin


anonymous
anonymous
sketch #1459 khvjkhu


anonymous
anonymous
sketch #4595 Hell Boy by Cristina Love


anonymous
anonymous
sketch #312


anonymous
anonymous
sketch #3974 Bird Skerch w/ vibration


anonymous
anonymous
sketch #4895 Cat by Gaurav Patel


anonymous
anonymous
sketch #3489 Panda by Scott Terry


anonymous
anonymous
sketch #2559 sun


anonymous
anonymous
sketch #1045


anonymous
anonymous
sketch #5047 Pikachu and Raichu by Saiful Farizam


anonymous
anonymous
sketch #3822


anonymous
anonymous
sketch #2022


anonymous
anonymous
sketch #4566 Edward Scissorhands by Angel Ördoñez


anonymous
anonymous
sketch #5049


anonymous
anonymous
sketch #5064


sketchmaster
sketch #2638 Cliff cool


anonymous
anonymous
sketch #5070 The Rolling Stones by Roby Krdoso


anonymous
anonymous
sketch #3539 Octo by Aristo A. Kadir


anonymous
anonymous
sketch #4876 Luffy by Nycole Prietsch


Tom Kelly
sketch #4 Nirvana Smiley


anonymous
anonymous
sketch #1833 Head shot - abz


anonymous
anonymous
sketch #4558


anonymous
anonymous
sketch #3138 Papa Smurf by Courtney Spragg

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