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SSS Congruence

Move the slider to the right one step at a time and observe what happens.
1.) After the construction, move any of the vertices of triangle ABC. What do you observe? 2.) How is the construction similar to the manual compass and straightedge construction? 3.) Which of the congruence postulates of triangles does the construction show? More than 50 GeoGebra Tutorials at Math and Multimedia.