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Tangent Lines Drawn to the Same Point
Author:
Lindsey Walborn
Move the points B and C around the circle and keep an eye on the measurements of BD and CD.
GeoGebra
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Supplementary Angles
Rose Curve - A Classical Construction
Rotating Points (Optical Illusion)
Angles and Intersecting Lines: Quick Investigation
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Austin King
Truss structure - graphical solution - Cremona diagram
Anjali Vlassak
TriangleCircumcenter1
Standard Notation to Scientific Notation
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