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扇形滚动(圆心角半径可变)
Author:
赵林
GeoGebra
New Resources
平行線的斜率
正方形雪花图案
斜率的值
圓的切線方程
龙形曲线-分形龙2
Discover Resources
龍騰4_1-1講進4
折扣 例4
商高定理\水
gjh-f01-00 最短距離與對稱點
S6G6时间轴——历史上的名人
Discover Topics
Pythagoras or Pythagorean Theorem
Centroid or Barycenter
Trigonometric Functions
Ellipse
Percentages