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橢圓的切線作圖
Author:
紀延平
GeoGebra
New Resources
球体的体积推导（优化版）
第八周作业
【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
【案例】2013年安徽高考15题
Discover Resources
version 1
翰林B4課p227_9
How to draw a square with ruler and compasses?
學習活動六線性規劃
折纸角度探究2
Discover Topics
Logarithm
Cuboid
Kite
Straight Lines
Rhombus