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仰角和俯角
Author:
SIN MING WONG
,
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
拼砌四邊形
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
找出對稱軸
兩組對邊相等的四邊形
Discover Resources
弦的中點軌跡
弦中點的軌跡
多項式
P6 數學 立體的截面
地球儀
Discover Topics
Upper and Lower Sum or Riemann Sum
Derivative
Rotation
Right Triangles
Terms