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GeoGebra
GeoGebra Classroom
GeoGebra
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Nonagon
Author:
Brooklyn Goldman
GeoGebra
New Resources
Linear Cross Section Exercise
Angles and Intersecting Lines: Quick Investigation
"Compressed" Astroid as Envelope
Isosceles Triangle: Quick Construction
Rotating Points (Optical Illusion)
Discover Resources
areperpendicularABC-c
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Esposito Right Isosceles Triangle 9 Point Circle
Algebra applets
三角形内任一点与随机顶点的迭代
Discover Topics
Scalene Triangles
Reflection
Ratios
Diagrams
Quadratic Equations