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PolySpiral
Author:
John Golden
Topic:
Angles
,
Dilation
Alan Davis was making spirals out of divisions of regular polyhedra. Which this isn't, but you could use it to make them.
Original tweet
GeoGebra
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van Aubel's Theorem
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Angles and Intersecting Lines: Quick Investigation
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Repère pour représentations graphiques
Geobra project
Vectors
Worksheet #4, Exercise #1
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Differential Calculus
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