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Author:
GaryLee
GeoGebra
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兩位數除以一位數（二）
画直线等分三角形的面积
【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
拼砌四邊形
Discover Resources
推移（x 方向）
圓錐截痕
正四角錐
砍价
對稱之美
Discover Topics
Linear Programming or Linear Optimization
Linear Functions
Diagrams
Pythagoras or Pythagorean Theorem
Surface