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圆锥曲线
Author:
吕胜
GeoGebra
New Resources
科赫雪花
第八周作业
圓的基本性質
直線的斜率：水平變化 & 鉛垂變化
双心四边形
Discover Resources
DSE Circle-ACT03B Relationship Between Chords and Angles at Centre
Midpoint Theorem and Intercept Theorem
手机下载课件
小数除法
把三角形分類 的複本
Discover Topics
Sine
Plane Figures or Shapes
Similar Triangles
Straight Lines
Means