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1986全国理21
Author:
常振虎
GeoGebra
New Resources
球体的体积推导（优化版）
画直线等分三角形的面积
兩組對邊相等的四邊形
兩位數除以一位數（一）
拼砌四邊形
Discover Resources
Conjecture (Tropical Hoehn's Conjecture)
向量比換面積比
y=sinx+1,y=2sinx,y=sin2x的圖形
展開圓面積 (講義版)的副本
橢圓軌跡
Discover Topics
Pie Chart or Circle Chart
Median Value
Statistics
Integers
Calculus