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巧算面积演示
Author:
math Ku
Topic:
Area
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
兩位數除以一位數（二）
找出對稱軸
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中線平方定理在圓上應用
Area of Triangle
畢氏三元數
滑桿動畫
数矩形个数
Discover Topics
Rectangle
Mode
Circumcircle or Circumscribed Circle
Rhombus
Logarithmic Functions