Two lines perpendicular to the same line are ______
perpendicular to each other
parallel to each other
intersecting lines
meet each other
Two lines that are perpendicular to the same line are parallel to each other.
Two lines that are respectively perpendicular to two intersecting lines always intersect each other.
Two lines perpendicular to the same line are perpendicular to each other.
Which of the following statements are true (I) and which are false (F)? Give reasons. (i) If two lines are intersected by a transversal, then corresponding angles are equal. (ii) If two parallel lines are intersected by a transversal, then alternate interior angles are equal. (iii) Two lines perpendicular to the same line are perpendicular to each other. (iv) Two lines parallel to the same line are parallel to each other. (v) If two parallel lines are intersected by a transversal, then the interior angles on the same side of the transversal are equal.