Brain › General KnowledgeHow many lines are on a standard tennis court?101559AnswerThe correct answer is D) 9.More General Knowledge questionsHow many cents are in a dollar?How many players are on a soccer team?How many notes constitute an octave?How many lines are contained in a sonnet?Who was the first baseball player to have his uniform number retired?What was Joe Dimaggios nickname while playing with the Yankees?Play Brain · Practice