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Nonagon-Kole Phelps

Author:kphelps2019

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Triangle with 3 Right Angles
apec
Pitfalls of Disk/Washer Method
Untitled
bewijs stelling van Pythagoras

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Reference Angles
Right Triangle Explorations
geo 1
sphere4
TriEq_4

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Orthocenter
Trapezoid
Optimization Problems
Histogram
Planes

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