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Auxiliary Line
Author:
ejlin
GeoGebra
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Untitled
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函數的單調性
apec
seo tool
Discover Resources
Burch - Angry Birds
Perpendicular Lines
Moving Sofa
Project
Invariant points in the line x=y. Points B, C, D are invariant in the line x=y. But A is reflected as A' in the line x=y.
Discover Topics
Subtraction
Constructions
Trapezoid
Upper and Lower Sum or Riemann Sum
Planes