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乘法计时训练
Author:
孟宝兴
Topic:
Multiplication
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
四邊形的特性
兩位數除以一位數（一）
判斷球體
Discover Resources
畢氏定理動態證明(歐基里得，平形四邊形等面積2，應用時間參數跳躍函數配合向量)
因式分解二次方程
External tangent
初三第十五讲真卷4-23题
Circle
Discover Topics
Angles
Boxplot
Arithmetic Mean
Plane Figures or Shapes
Quadrilaterals