GeoGebra
Sign in
Resources
Favorites
Timeline
People
Groups
GeoGebra
Home
News Feed
Resources
Profile
People
Classroom
App Downloads
Aoi Yamada
About
Follow
normal vector
Activity
Aoi Yamada
進入拋面的平行光會反射至焦點
Activity
Aoi Yamada
固定邊長之長方形的特定內接平行四邊形面積
Activity
Aoi Yamada
