How to draw a part of a parabola in the geometric sketchpad and then fold it along the X axis? Can you answer as soon as possible? Thank you!

You need to use the build trajectory. You download the strongest Chinese version of Geometry Sketchpad 5.05, and there is a manual in the help. Part of a parabola is realized by right-clicking-Properties-Drawing-Selection Range.

At the end of page 60 of the manual, there is a way to make a folded image.

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