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gjh-e01-04 未知數角度的三角形
Author:
張芃婕
GeoGebra
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画直线等分三角形的面积
判斷球體
拼砌四邊形
兩位數除以一位數（一）
球体的体积推导
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三角形的內角和＝180度
圓形墊圈 (Washer)
扇形動畫
均分除法（整數÷整數）的副本
加减乘除运输出题器
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Geometry
Solids or 3D Shapes
Power Functions
Line Segment
Quadratic Equations