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真分數相乘
Author:
spkwan
GeoGebra
spkwan, created 21Nov2012, revised 25Oct2018.
New Resources
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
三位數除以一位數（二）
錐體建築師
四邉形 (四年級) 教師版
Discover Resources
Projection
螺線相似正N邊形
qid_39321
All in one (centres of triangle)
勒洛三角形頂點B軌跡
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Scatter Plot
Ratios
Mode
Diagrams
Root