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三角比的性質
Author:
Derek CHIU
GeoGebra
New Resources
三位數除以一位數（一）
拼砌四邊形
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
算柱 (兩位數)
Discover Resources
過圓內一點最短弦
一階導函數
橢圓重心軌跡1
circle
双曲柄结构
Discover Topics
Arithmetic Operations
Interest Calculation
Angles
Integers
Quadrilaterals