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八年级数学竞赛之比例线段
Author:
王俊辉
拖动点G，研究位置变化及关系
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數加法
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
Discover Resources
三角形全等的理由 – 題3
Addition and Subtraction of Polynomials(多項式的加減法)
砍价
切線斜率的副本
轴对称
Discover Topics
Mode
Standard Deviation
Ellipse
Difference and Slope
Circumcircle or Circumscribed Circle