Interactive Spreadsheet- Geometry

This is an example of how an interactive spreadsheet may be used in a high school geometry class. The images are relevant to the questions. Since responses have to be one word, their are some limitations to the level of difficulty that the questions may be. Students receive immediate feedback, which is great. This would be great as a reveiw before a test because students can see what they have not yet grasped. On the other hand, I am not sure how the points come into play. Can the teacher electronically access the number of points each student recieves? I think I would prefer to use google docs than excel in to create interactive worksheets for my classes in the future.