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10-4-2螺線Spiral四足
Author:
pingfeng.wu
GeoGebra
New Resources
直線的斜率
画直线等分三角形的面积
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
探究三角形的全等條件
Discover Resources
角α与-α的正弦函数关系
圓環
與兩圓相切之圓心雙曲線軌跡
Graph of Trigonometry
線性變換矩陣（二階）的副本
Discover Topics
Sine
Line Segment
Vectors 3D (Three-Dimensional)
Ellipse
Quadrilaterals