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餘弦定理
Author:
yuchengda
GeoGebra
New Resources
四邉形 (四年級) 教師版
找出對稱軸
拼砌四邊形
【案例】2013年安徽高考15题
三位數除以一位數（二）
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z=x^2-y^2
Conjecture (Tropical Hoehn's Conjecture)
對數函數
拋物線的疊合
[洋葱] 一线三等角的应用
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Quadratic Functions
Root
Line Segment
Geometric Transformations
Bar Chart or Bar Graph