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作者：
Sindi Sihlongonyane
GeoGebra
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Neuberg's Theorem
apec
Tetrahedron String Art
Making New Year's resolutions for 2026
Visualizing the Pythagorean Identity with Sine and Cosine
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Finding the midpoints of parallel segments
outside circle intersection
Exploding Dots (Overview)!
Regular Dodecagon
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