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正弦规
Author:
阳光
Topic:
Constructions
GeoGebra
New Resources
近似值：有效數字
兩組對邊相等和有直角的四邊形
第八周作业
兩組對邊相等的四邊形
畫出對稱圖形
Discover Resources
推移（y 方向）
自製座標軸箭頭與標籤
體積的量度 4
日照杆影演示
小六 正方體的展開圖
Discover Topics
Unit Circle
Hyperbola
Median Line
Polygons
Planes