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三角形面積公式 1/2 bc sinA
Author:
羅驥韡 (Pegasus Roe)
Topic:
Area
GeoGebra
New Resources
第八周作业
長方體平面投影 (Codex版)
Fibonacci Clock
判斷球體
近似值：有效數字
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旋梯
數值滑桿
GGB 基礎教學（平面幾何）
四色地图
平移
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Hypothesis Testing
Volume
Perimeter
Numbers
Quadrilaterals