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Triangle Sum Theorem
Author:
npwilson
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Droste effect
Blancmange curve (fractal)
Flip Flop
探究由平行線和截線所成的角
Exploring Simple Loci 探究簡單軌跡
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satellite
act 3 pag 41
Incenter
Untitled
GraphingInGroups4
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Conic Sections
Reflection
Trapezoid
Quadratic Functions
Symmetry