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盾牌(小動畫)
Author:
Lin Lu-Yang
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
兩組對邊相等的四邊形
球体的体积推导（优化版）
球体的体积推导
Discover Resources
判斷三角形
勾股定理
Quiz on Solving One-step Linear Equations (1)
双绝对值函数的最小值.许兴华数学
旋转的花瓣
Discover Topics
Conic Sections
Limits
Coordinates
Integers
Area