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Author:
keith leung
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Tim Brzezinski
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GeoGebra
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兩位數除以一位數（一）
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
找出對稱軸
四邊形的特性
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圓內接四邊形 ABCD ...，求 sinθ=?
test2
Sequence指令作圖-3
Copy of 教學－與直線有關的角
拋物線2-焦點法
Discover Topics
Planes
Dilation
Line Segment
Scatter Plot
Logarithm