![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Opposite sides of a rectangle are congruent and parallel. So, the y-coordinate of C is a.Opposite sides of a rectangle are congruent and parallel. So, the y-coordinate of C is a.
Length of ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ec800ab8a0e141fd17b9a538eae1def3.png\")
is 3a, and the length of ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9f1c7ecd7582f7e4291608de67847b75.png\")
is 3a. So, the x-coordinate of C is 3a.
The coordinates of C are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6de2fddd656c3032f55f1e35511d3938.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The coordinates of C are .