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離心率與圓錐曲線
Author:
Ho-Kai Chen
Discover Resources
graphs of cot x, cot^-1 x
Rotation Tessellation
PMC 2009-10 Q8
Conic Sections
Task - What Times What
New Resources
Midpoints of ANY quadrilateral forms a parallelogram
Example LF.4.2
Locus Construction 1
Colourful waves with circles
Example LF.4.1
