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圓周 (圖形B)
Author:
Keith Ko
移動右圖中的紅線到左方虛線，就知道它是相等於左圖的哪條線。
GeoGebra
New Resources
算柱 (兩位數)
異分母分數減法
四邊形的特性
拼砌四邊形
兩位數加法
Discover Resources
Area of polygon
二次函数与一元二次方程和一元二次不等式
max_error
GGB 教程
橢圓幾何性質,光學性質,生活應用
Discover Topics
Confidence Interval
Subtraction
Functions
Vectors 3D (Three-Dimensional)
Logarithmic Functions