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梯形有甚麼特性?
Author:
Anthony OR 柯志明
GeoGebra
New Resources
比較五件物件的重量
双心四边形
折扣
百分數及其應用
第三周作业效果演示
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下和
simulation of the uniform variable linear motion
滑桿動畫
Copy of 20151104 四邊形 P2
拋物線 (丹德林球)
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Fractions
Arithmetic
Bar Chart or Bar Graph
Right Triangles
Median Line