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折射的現象
Author:
Jia-ming Shiu
拉動G，看出虛擬呈現
GeoGebra
New Resources
畫出對稱圖形
四邊形的特性
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
Discover Resources
包含除法（整數÷整數）
SIMPLE EQUATION
橢圓的定義畫圖
三節棍的軌跡
時距計算機 (時針改變)
Discover Topics
Kite
LCM and GCD
Continuity
Cube
Trigonometry