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Aristarchos' shadow enlargement
Author:
A. G. Gomez (agg29@ou.ac.uk)
Illustration of Earth shadow enlargement during Moon eclipses
GeoGebra
New Resources
Shade a spheric triangle with "surface".
Kopie von parabel - parabol
Periodic Functions
Art and Rotational Symmetry
探究由平行線和截線所成的角
Discover Resources
Loupe I
PR_unit2_activity1_Q3
Classifying Triangles
Alex Rigid motions challenge
#2 Given a Line Segment, Draw Another
Discover Topics
Trigonometric Functions
LCM and GCD
Orthocenter
Conditional Probability
Secant Line or Secant