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几何与勾股定理
Author:
叶明杰
GeoGebra
New Resources
找出對稱軸
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
畫出對稱圖形
算柱 (兩位數)
Discover Resources
clock
畫三角形 題2a
立體線圈
Rotational and reflectional symmetry of a regular polygon
兩位數除以一位數（二）
Discover Topics
Difference and Slope
Quadrilaterals
Upper and Lower Sum or Riemann Sum
Addition
Parametric Curves