为什么椭圆内中点弦和等比例缩放后的椭圆(离心率一致)相切且切点是原中点? 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 theseYacht, Romper, Sling, Bracelet, Kissing bandit, Cockroach, Truck, Pine, Parents, Catfish, 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 #4661 Woodpecker by Hsien-Ying Hsieh


Rachel Roe
sketch #2646 Buzzy bee on flowers


sketchmaster
sketch #2476 Asuna from SAO by sketchmaster


anonymous
anonymous
sketch #4975 Orange by Marcos Roberto Molina


anonymous
anonymous
sketch #4414


James Forest
sketch #3014 Fancy "S "


anonymous
anonymous
sketch #4368


anonymous
anonymous
sketch #5361 Emma Watson by Glynis June Williams


anonymous
anonymous
sketch #1041 strawberries


anonymous
anonymous
sketch #3300


anonymous
anonymous
sketch #3753


Tom Kelly
sketch #215 my mickey mouse


anonymous
anonymous
sketch #4313


Ariel Fernando
sketch #1061 garota ao vento


anonymous
anonymous
sketch #4589


anonymous
anonymous
sketch #3683 Hellboy by Loai Issa


anonymous
anonymous
sketch #5250


anonymous
anonymous
sketch #1253


Zay Lin
sketch #3399 zay lin


anonymous
anonymous
sketch #3268 Werewolf by Mert Arda Yiğit


Rachel Roe
sketch #674


anonymous
anonymous
sketch #3058 Marilyn Monroe by Adam Pyszny


anonymous
anonymous
sketch #5343


anonymous
anonymous
sketch #2977 Spongebob Germaine Hoens


anonymous
anonymous
sketch #3760 PSY by Juvenilia Alexandrino


anonymous
anonymous
sketch #5229


anonymous
anonymous
sketch #4984 Zombie by London Waterlilly


anonymous
anonymous
sketch #5188 Paul Walker by Taï Marsan


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

tomski为什么椭圆内中点弦和等比例缩放后的椭圆(离心率一致)相切且切点是原中点? 知乎 coloring