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圓周 (圖形D) 的複本
Author:
Michael Ma
,
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
折扣
圓的切線方程
盈利與虧蝕
直線的斜率：水平變化 & 鉛垂變化
中华人民共和国国旗
Discover Resources
函數切線及法線
我的测试
xcxzczxczxczxczxczxc
垂心問題
Angle between line and plane
Discover Topics
Polygons
Triangles
Tangent Function
Derivative
Circumcircle or Circumscribed Circle