how can measure general slope, aspect and height of polygons?

Discussion created by ghazipo8 on Jan 12, 2012
Latest reply on Jan 13, 2012 by ghazipo8
Hi everybody
I have a  polygon shp file from 300 landslides and  I need to have some information  for this landslides
1- general slope of landslide`s polygon (not cell by cell) 
2- general aspect of polygons
3- average height and max and min height of polygons
I need all this data for each polygon one by one.
I know which I have to do this in several steps but I dont know how? please tell me how can I do this. I searched a lot but ,no solution.