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perimeter
Author:
cheng JJ
,
Tim Brzezinski
,
Steve Phelps
GeoGebra
GeoGebra
New Resources
異分母分數減法
找出對稱軸
兩位數加法
球体的体积推导（优化版）
【案例】2013年安徽高考15题
Discover Resources
銳角三角函數值的大小比較
兩條數線比較(雙單位)
glt-c02-02 四角柱旋轉
量角器
數學電腦繪圖與解題
Discover Topics
Circumcircle or Circumscribed Circle
Parabola
Frequency Distribution
Ratios
Differential Equation