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如何求切線長
Author:
luke huang
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
球體建築師
判斷球體
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畢氏定理動態證明(歐基里得，平形四邊形等面積，應用polyline)
test
可動多邊形
Perpendicular lines
工作紙(1) 思考題
Discover Topics
Sphere
Equations
Similar Triangles
Matrices
Geometric Mean