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冲关选18
Author:
黄旭
GeoGebra
New Resources
盈利與虧蝕
斐波那契螺旋弧线（表格法-可动态调节）
龙形曲线-分形龙2
第八周作业
活动三：应用性质
Discover Resources
Bearings 方位
Making Graph paper
Graph of Sine Function 正弦函數圖像
CIRCLE
天佑數學三下B - 分數(二)
Discover Topics
Optimization Problems
Dilation
Orthocenter
Right Triangles
Addition