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在三角形兩個邊各取一點使得三線段等長(BK=KL=CL)
Author:
黃國斌
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GeoGebra
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拼砌四邊形
判斷球體
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
兩位數加法
Discover Resources
畢氏定理拼圖007(8片)
複合棒形圖_並列
Temp file
第7题
加法(10一數的副本
Discover Topics
Intersection
Differential Calculus
Trigonometry
Line Segment
Tangent Line or Tangent