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用向量找北极星
Author:
龚洪萍
Topic:
Geometry
GeoGebra
New Resources
兩位數除以一位數（一）
三位數除以一位數（二）
判斷球體
球體建築師
錐體建築師
Discover Resources
發現畢氏定理
ibooks-函數的平移
複合圖形(一)
example 1_sun
F3 Ch9.3 羅盤方位角
Discover Topics
Triangles
Indefinite Integral
Curve Sketching
Cone
Variance