At this point, you know the properties of a rhombus, and you can prove when a parallelogram is also a rhombus.  You also know several postulates about rhombus diagonals, and you've seen how to use these postulates to work problems. Now, use what you've learned to solve each problem in the attached worksheet. Click the Activity button to access the worksheet. Remember to show the steps you took to solve the problems. When you have completed the worksheet, submit it to your teacher.