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平面立体截图
Author:
艳er
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
【案例】2013年安徽高考15题
第八周作业
判斷球體
Discover Resources
畢氏定理動態證明(歐基里得，平形四邊形等面積，應用polyline)
frog 4
牛頓定理二
請自訂一個工具
"拈" 類遊戲之一-搶21遊戲 The 21 game
Discover Topics
Logarithm
Quadratic Equations
Integers
Exponent
Limits