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三角形外角和
Author:
陈宜红
Topic:
Triangles
GeoGebra
New Resources
斐波那契螺旋弧线（表格法-可动态调节）
第八周作业1
龙形曲线-分形龙
平行線的判定
第八周作业
Discover Resources
Cube in Perspective 正方體的透視
Logarithmic spiral
兩圓及交弦
tytyty
拋物線 (丹德林球)
Discover Topics
Planes
Multiplication
Addition
Cuboid
Constructions