Yes you can but it's easier to have one and to just focus on them (this depends on your story.) I would say you shouldn't have more than 3 because the story could become hard to maintain unless you are an experienced writer.
The protagonist is the main character of the story. Everything evolves around him/her. Usually, in a story, the protagonist wants to reach a goal, but many obstacles are in his path to reach this goal. These obstacles can be natural (a storm, a tornado) or human. The human obstacles doesn't want that the protagonist reach his/her goal. The human obstacles are called "Antagonist". Other characters in a story are called minor characters. These characters can help the protagonist to reach his/her goal, or be simply "decorations" and do not interact with the protagonist. There can be more than one protagonist or antagonist in a story.
In my opinion Life and the events that occur in the story are the antagonist. World War 1 and The Revoluntionary War change Zhivago. Zhivago, once an eccentric poet is now sad and depress.
there are more than 1 because there are more than 1 triangles on geomotry
3
No it is most certainly not in fact it is rather poor
1 litre is more than 1 pint
2 is more than 1.
Usually a 1 chapter long story, or a picture that tells a story, and is usually a romantic story of 1 or more of the characters.
Yes it does at first. THUG1 has a lot of levels at the start and end of story mode. THUG2 only has a few when you finish the story mode then you have to beat classic mode. I personally like THUG1 better than THUG2 because there is more to do in the game.
Yes, 56 is more than 1.
3 more than 2 is 51 more than 1 is 2The product of 2 and 5 is 10
There is more than referance to Goliath in the Bible, but the main story of David and Goliath is found in 1 Samuel 17.