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作垂线或平行线
Author:
龚佳林
过已知点作已知直线的垂线
GeoGebra
过已知点作已知直线的平行线
GeoGebra
New Resources
球體建築師
找出對稱軸
柱體建築師
三位數除以一位數(一)
三位數除以一位數(二)
Discover Resources
Symmetric設計對稱圖案(兩條對稱軸)(斜)
棒形圖3
gjc090c21內切圓的圓心
-1 ≤ cosA cosB cosC ≤ 1/8
畢氏定理的副本
Discover Topics
Constructions
Interest Calculation
Straight Lines
Difference and Slope
Triangles