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concurrence of medians and bimedians of tetrahedron
Author:
johnmayhk
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
算柱 (兩位數)
兩位數除以一位數（一）
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
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Task 8
畢氏定理動態證明(歐基里得，應用時間參數跳躍函數)
Section Curves (2)
第7题
拋物線6-包絡線法
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Fractal Geometry
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Pie Chart or Circle Chart
Dilation