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圓心至弦的垂直平分弦 / 圓心至弦中點的連線 ⊥ 弦 / 弦的 ⊥ 平分線通過圓心
Author:
Mr Chung Chi Kit
GeoGebra
New Resources
cylinder net slider
Ellipse as Envelope - Correspondence Method
Isosceles Triangle: Quick Construction
Pelecoid
Piano. Keyboard.
Discover Resources
PacMaze
Surface of Revolution: Vase with Splines
Mug's New Hat
perpendicular bisector
extending trig functions using the unit circle
Discover Topics
Tree Diagrams
Pyramid
Surface
Parabola
Mode