Performing Transformations Graphically vs. Algebraically
I have a problem that I hope can be fixed regarding transformations. When I do a reflection or rotation of an object graphically, Geogebra creates two new vertices for the image. I've attached an image to show what I mean. I follow the typical instructions for a graphic command. For example to create the 90-degree rotation about the origin in the image, I clicked and dragged to highlight quadrilateral ABCD, then I clicked on the origin, and then I entered 90 degrees counterclockwise. I would expect this to produce A', B', C', and D'. I do not want A_1', B_1', C_1', and D_1' to be created at the same time as it is redundant. Normally I just delete the second set of points, but I am tired of doing that and telling my students to do that as well. I know there are multiple methods for doing this in the Algebraic view, but when teaching K-12 students, using the graphic commands is more intuitive and efficient. Hopefully this minor glitch can be fixed. Thanks!