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The Nine-Point Center
Author:
Steve Phelps
The Nine-Point center is the center of the circumcircle of the medial triangle. Play through the construction and try your hand in the app below.
GeoGebra
GeoGebra
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Tutorial: Create lists of numbers and objects
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Parallelograms: Quick Investigation
Icosahedron1
Variation Theory Parallelogram Proofs
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TR (KAY) - Όρια
parallel lines
continuity at a point
H2M L8 Q4
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