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教学素材：圆锥曲线极坐标方程
Author:
清风拂琴，陌上花开
GeoGebra
New Resources
中华人民共和国国旗
第八周作业2
双心四边形
盈利與虧蝕
第八周作业1
Discover Resources
gjh-e01-02 未知數邊長的長方形
向量加法
congruent triangle2_provided by Mr Yeung Kar Chun
〃Two〃
翰林數學_2下_CH3-1_三角形的外角和
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Scalene Triangles
Straight Lines
Upper and Lower Sum or Riemann Sum
Addition
Integers