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20190530 與平行線有關的角
Author:
Hui Sir
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
異分母分數減法
画直线等分三角形的面积
【案例】2013年安徽高考15题
Discover Resources
斜率 - 概念及定義 (2)
「相似三角形」任务1
task 1
circle
橢圓的副本
Discover Topics
Vectors
Piecewise Functions
Optimization Problems
Differential Equation
Complex Numbers