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三角形三內角和
Author:
chuck.ncyu
GeoGebra
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第八周作业
双心四边形
盈利與虧蝕
百分數及其應用
活动三：应用性质
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尺規作圖找平方根點(以根號2為例)
硬币
test3
拋物線3--平行四邊形法
橢圓1--同心圓法
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Parametric Curves
Symmetry
Unit Circle
Surface
Similar Triangles