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S4E09 转动的圆
Author:
宋晓燕
GeoGebra
New Resources
【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
第八周作业
三位數除以一位數（二）
兩組對邊相等的四邊形
Discover Resources
曲線下面積
Copy of 固定面積的圖形的周界變化
Area of Triangle
圓內接四邊形任務二：提示一
等比数列计算练习
Discover Topics
Correlation
Conditional Probability
Cone
Calculus
Triangles