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内凹的正方形
Author:
陈宜红
Topic:
Plane Figures or Shapes
GeoGebra
New Resources
直線的斜率：水平變化 & 鉛垂變化
比較五件物件的重量
科赫雪花
折扣
中华人民共和国国旗
Discover Resources
三角形外心-性質說明
test1(尋找北極星)
三角形的外心
(003)80201辛宇婕
other
Discover Topics
Line Segment
Distributions
Straight Lines
Conic Sections
Curve Sketching