Image Problems 
SM 6-8 D017/D018/D019/D020/D084/D085 
6.5 IMAGE PROBLEMS 
6.5.1  SKEWED, TRAPEZOID AND PARALLELOGRAM IMAGES 
Skewed Images 
  The image's leading and trailing edges are parallel. 
  The image's left and right edges are also parallel.   
  But, all four sides are not parallel with the paper edge. 
 
Trapezoid Images 
  Only the image's trailing edge is not parallel with the paper edge. The other 3 sides are 
parallel to the paper's edges.