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Author:
markfang
GeoGebra
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异形操场
比較五件物件的重量
直線的斜率：水平變化 & 鉛垂變化
圓的基本性質
第八周作业
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構成三角形的邊長條件
證平行四邊形 (對邊相等)
ggxfs 凹面鏡的反射成像
三節棍
同底等高的三角形面积相等.许兴华数学
Discover Topics
Arithmetic Operations
Geometric Transformations
Incircle or Inscribed Circle
Equations
Circle