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整式乘法-平方差公式
Author:
孟宝兴
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
【案例】圆柱体内放置一个大球六个小球
找出對稱軸
Discover Resources
特別角的三角函數值(2)
固定邊長之長方形的特定內接平行四邊形面積
Rotation
Copy of 多边形外角和
正方形的邊長和周界
Discover Topics
Quadrilaterals
Random Experiments
Congruence
Right Triangles
Upper and Lower Sum or Riemann Sum