[size=150]Feel free to access [b][url=https://www.geogebra.org/classic/mukb7u8d]this GeoGebra construction[/url][/b] to help you answer any question you generate below. In this construction, both [i]A [/i](pre-image) and [b]vector [/b][b]v [/b]are moveable. [/size]