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龍騰4_1-1講段9
Author:
廖傑成
GeoGebra
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異分母分數減法
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
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Choose the most suitable 'improvised units'(中間人)
Question 1
軌跡 直線 (與兩平行線等距)
高考抛物线题的动态演示5.许兴华数学
三角函數圖形的副本
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Statistical Characteristics
Mode
Equations
Equilateral Triangles
Special Points