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GeoGebra
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Author:
Elaine Hewitson
New Resources
Construct a Square
Rotating Points (Optical Illusion)
Angles and Intersecting Lines: Quick Investigation
Drag that Point!
Ellipse as Envelope - Correspondence Method
Discover Resources
Start, Perpendicular Bisector
Side Splitter Thm
การดำเนินการของเซต
Inscribed Angles
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Discover Topics
Trigonometry
Equilateral Triangles
Fractal Geometry
Sphere
Quadrilaterals