There could be some.
Triceratops didn't eat any animal. It was a herbivore.
Rhinoceros is not at all related to Triceratops. Rhinoceros is a mammal, while Triceratops is a dinosaur and thus a reptile. Any similarity between the two is simply superficial.
it a three horned animals
Both Protoceratops and Triceratops belong to the suborder Ceratopsia, so they are somewhat related. However, Protoceratops belongs to the family Protoceratopsidae while Triceratops belonged to the family Ceratopsidae.
You've obviously never looked at a picture of a triceratops. They were large, heavy animals without wings.
Triceratops didn't have any descendants. Their closest living relatives are the birds, which evolved from theropod dinosaurs. All birds are equally related to Triceratops.
Tyrannosaurus rex didn't choose to hunt Triceratops over other animals. The most common herbivores at that time and place were Triceratops and Edmontosaurus. Tyrannosaurus definitely hunted Edmontosaurus regularly, probably more often than Triceratops.
No, it was plant eating dinosaur.
None that we know of. The triceratops was believed to be the very last of the large herbivorous dinosaurs. The modern rhino bears some resemblance, but is not even distantly related to triceratops.
Rhinos only bear a passing resemblance to Triceratops because of their bulky bodies and the horns on their faces. They are not related to Triceratops, however. Rhinos are mammals, while Triceratops were dinosaurian reptiles. No mammals have evolved from dinosaurs, rhinos included. In short, they appear slightly similar just because of coincidence.
Triceratops was a herbivorous dinosaur. So, its teeth were adapted for plucking and grasping. The teeth had a rounded end and were arranged in groups. Check the related links for a close-up of Triceratops teeth.
All dinosaurs that ate plants and had three horns were relatives of Triceratops. Some examples that are not Triceratops, but are related to Triceratops, include Agujaceratops, Anchiceratops, Arrhinoceratops, and Chasmosaurus.