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challenging1
Author:
Neagoe Petrisor
GeoGebra
New Resources
Ellipse, Hyperbola and Circle as Envelopes
Angles and Intersecting Lines: Quick Investigation
Napoleon's Theorem
Piano. Keyboard.
Rotating Points (Optical Illusion)
Discover Resources
Area of Circles
Different Centres in Geometry
polygon enlarge
Transformations Quizlet
Interior and Exterior Angles Animation
Discover Topics
Diagrams
General Quadrilateral
Orthocenter
Median Value
Quadrilaterals