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正弦定理的验证
Author:
junfeilx
GeoGebra
New Resources
兩組對邊相等的四邊形
球体的体积推导（优化版）
兩組對邊相等和有直角的四邊形
兩位數加法
三位數除以一位數（二）
Discover Resources
Direct Variation (Different powers of x)
你能找出一元嗎?
圓與三角形的中點軌跡
串珠(大小不同)
幾何板上的等腰梯形
Discover Topics
Parabola
Distributions
Addition
Centroid or Barycenter
Tangent Function