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Quiz on Solving Right Triangles (Finding Side Lengths) 解直角三角形：測驗1（求邊長）
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
直角坐標平面上的旋轉變換
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
兩組對邊相等的四邊形
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四下_面積（一）(教師版)
Escher 階梯
二年級-柱體的觀察
橢圓軌跡03
Copie de 河內塔 (Tower of Hanoi)
Discover Topics
Integral Calculus
Cosine
Surface
Symmetry
Stochastic Process or Random Process