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圓柱截痕
Author:
王玉梅
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
四邉形 (四年級) 教師版
兩位數加法
Discover Resources
「ASS」
數線上的有理數
畫圓
Geometric Meaning of Derivatives
等弦則等弦心距
Discover Topics
Variance
Triangles
Pyramid
Tree Diagrams
Orthocenter