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正弦定理的验证
Author:
junfeilx
GeoGebra
New Resources
柱體建築師
兩組對邊相等的四邊形
拼砌四邊形
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
Discover Resources
螺旋線
君子球
尋找三角形的內切圓
學習單：三角形外切圓作法
圓周率的應用 題A
Discover Topics
Normal Distribution
Angles
Geometry
Parabola
Sequences and Series