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GeoGebraGeoGebra Classroom

GoGeometry Action 102 !

Topic:
Square
Creation of this applet was inspired by a tweet from Antonio Gutierrez (GoGeometry). You can adjust the sizes of the 3 squares by dragging the LARGE WHITE POINT. What is the measure of the GRAY ANGLE? What is the measure of the PINK ANGLE? How can we formally prove your answers to both these questions true?