Combining intervals, Problem Set
easiest
moderate
harder
hardest
ray,ray
Prob. Set 1
Prob. Set 2
Prob. Set 3
Prob. Set 4
ray,segment
Prob. Set 5
Prob. Set 6
Prob. Set 7
Prob. Set 8
seg,seg
Prob. Set 9
Prob. Set 10
Prob. Set 11
Prob. Set 12
(ray,ray),ray
Prob. Set 13
(ray,ray),seg
Prob. Set 14
(ray,seg),ray
Prob. Set 15
(seg,seg),ray
Prob. Set 16
Please copy the above info if reporting trouble. --- RM