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E
Author:
Jia-ming Shiu
E
GeoGebra
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双心四边形
平行線的斜率
龙形曲线-分形龙2
直線的斜率：水平變化 & 鉛垂變化
折扣
Discover Resources
happy new year
百分數（小學）：折扣 / 賺賠
優良作品2(薇如)
測試教案 80630 張哲綸
三角形的面積的副本
Discover Topics
Tangent Function
Sequences and Series
Mode
Rotation
Line Segment