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GeoGebra
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Kanonen
Author:
Mats
GeoGebra
New Resources
Construct a Square
Slope Field (1)
Angles and Intersecting Lines: Quick Investigation
Supplementary Angles
van Aubel's Theorem
Discover Resources
perpendicular bisectors of sides of a triangle
math
Ortocentar
แกนหมุน
Orthocenter of a triangle