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周界-平移法(練習二)
Author:
Choy Wai Yan
GeoGebra
New Resources
三位數除以一位數（二）
找出對稱軸
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
Discover Resources
Area of trapezoid
三角形四心
藝術著色2
分數
圓錐
Discover Topics
Circumcircle or Circumscribed Circle
Cube
Complex Numbers
Step Functions
Pythagoras or Pythagorean Theorem