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7.4-2 平面向量的内积
Author:
GeoGebra Institute of WuXi
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
第八周作业1
龙形曲线-分形龙2
三角函数 的副本
平行線的判定
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遞迴數列的星星
三角形的邊長關係
Angle at Centre Twice Angle at Circumference
proof30黃煒皓
复合函数
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Linear Equations
Geometric Distribution
Sequences and Series
Straight Lines
Plane Figures or Shapes