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Mirror property of altitudes
Author:
Alexander Bogomolny
GeoGebra
New Resources
Roll 6d five times
Experiments with Transformations in the Plane
Balls in an Urn
Golden Rectangles and Golden Spirals
power rule of x^n derivatives
Discover Resources
Transformations of the square function.
Adjacent Angles
locus2
Incenter
Colorful random circles
Discover Topics
Conic Sections
Centroid or Barycenter
Angles
Subtraction
Real Numbers