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perpendicular to a line from an external point

Author:Sarah Sheley

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Exploring GeoGebra for the First Time
Reflection = 180° Rotation about a Line
Volume by Disk/Washer around y
Circle Passing Through 3 Points
bewijs stelling van Pythagoras

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How2HatchTheRegion4
Quadratics
Points around a circle - not quite working
The Tangent Ratio (II)
Transformation
Elastic & Inelastic Collisions

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Geometric Transformations
Diagrams
Volume
Limits
Square

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