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Copy of 圓周 (圖形F)
Author:
PGMS
,
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
兩組對邊相等和有直角的四邊形
Earth with coastline
四邊形的特性
Nested spiral octagon
近似值：有效數字
Discover Resources
Ex (SSS)
Parallelogram
同心圓
x²+y²+z²的取值范围
直纹面单叶
Discover Topics
Surface
Linear Equations
Reflection
Parabola
Translation