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作垂线或平行线
Author:
龚佳林
过已知点作已知直线的垂线
GeoGebra
过已知点作已知直线的平行线
GeoGebra
New Resources
畫出對稱圖形
【案例】2018年全国1卷理科12题
算柱 (兩位數)
兩位數加法
直角坐標平面上的旋轉變換
Discover Resources
複合圖形(四)
太极图
sierpinski carpet
極值問題
Template: 對稱03
Discover Topics
Line Segment
Percentages
Upper and Lower Sum or Riemann Sum
Fractions
Definite Integral