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三角形面積.Area of Triangle
Author:
harryau
Area of triangle. 三角形面積.
GeoGebra
New Resources
畫出對稱圖形
近似值：有效數字
兩位數加法
第八周作业
兩位數除以一位數（一）
Discover Resources
橢圓
兩位數除法
平行四邊形的面積
Exploration task
y=Asin(wx+f)图像变换
Discover Topics
General Quadrilateral
Optimization Problems
Logic
Geometric Transformations
Logarithmic Functions