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If指令的應用1
Author:
王正豪
GeoGebra
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兩位數加法
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
三位數除以一位數（一）
找出對稱軸
Discover Resources
Field function 展示
從長方形的「周界」找回它的「長」和「闊」
九點圓
盾牌(小動畫)
橢圓折痕
Discover Topics
Symmetry
Addition
Curve Sketching
Parametric Curves
Set Theory