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sin,cos比大小
Author:
Lunxin Liu
GeoGebra
New Resources
圓周公式的應用
探究三角形的全等條件
兩位數除以一位數（二）
画直线等分三角形的面积
垂直線的斜率
Discover Resources
四角柱算體積(可以切開)
Ex5C#8
謝爾賓斯基三角形
翰林數學_2下_CH3-4_大角對大邊
折纸角度探究1
Discover Topics
Frequency Distribution
Solids or 3D Shapes
Logarithm
Dilation
Angles