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杯子反射光線(包絡)
Author:
陳柄何
Topic:
Curve Sketching
GeoGebra
New Resources
兩位數除以一位數（一）
兩組對邊相等的四邊形
三位數除以一位數（二）
拼砌四邊形
兩位數加法
Discover Resources
畢氏定理動態證明(歐基里得，平形四邊形等面積，應用polyline)
優良作品2(怡雯)
夜市麻將模擬機2
[S2] a revised version of Jane’s GeoGebra file (modified by the author)
Question 4
Discover Topics
Functions
Square
Dilation
Cone
Geometry