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圆周长演示
Author:
黄旭
Topic:
Geometry
GeoGebra
New Resources
異分母分數減法
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
Discover Resources
雙曲線尺規作圖01
已知橢圓 x^2/a^2+y^2/b^2=1 (a>b>0)
Demonstration of the angles at the same segment
Add and subtract (binary)
金惠吉：三维李萨如
Discover Topics
Functions
Rational Numbers
Binomial Distribution
Step Functions
Prism