Consider the following statements in respect of three straight lines A, B and C on a plane:

1.If A and C are parallel and B and C are parallel; then A and B are parallel.

2.If A is perpendicular to C and B is perpendicular to C; then A and B are parallel.

3.If the acute angle between A and C is equal to the acute angle between B and C; then A and B are parallel.

Which of the above statements are correct?

Mathematics 2017 CDS Elementary Mathematics 2017 CDS 2017

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