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d2j
Author:
杜耀宗
GeoGebra
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龙形曲线-分形龙
平行線的判定
GeoGebra数学资源(4-8年级)
折扣
龙形曲线-分形龙2
Discover Resources
三角形的面積
相似三角形(一)
波的干涉 Wave Interference
比較角的大小一
面积
Discover Topics
Trigonometric Functions
Incircle or Inscribed Circle
Piecewise Functions
Definite Integral
Translation