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Quiz on Angle between a Line and a Plane 線面角：測驗
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
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四邊形的特性
算柱 (兩位數)
兩組對邊相等的四邊形
找出對稱軸
直角坐標平面上的旋轉變換
Discover Resources
f(x) and f(-x)
三角形的高與面積
線性變換矩陣（二階）
Ｑ５
公倍數與最小公倍數（L.C.M.）
Discover Topics
Orthocenter
Congruence
Functions
Definite Integral
Angles