Find the images of the triangle DCE under the following transformations:[br][br]1. Translation given by the vector u.[br]2. Line reflection given by the line a.[br]3. Rotation 90° clockwise about the point H[br]4. Glide reflection given by the line a and vector u.[br][br]Explain how you use the square grid to find to find the images. You may print the applet image (applet menu > Print preview) to work on it.[br][br]Make sure that you know how find images also by using [url=https://www.geogebra.org/m/pshx6vh9]a transparency[/url] and dynamic geometry (using the tools provided in the applet).