Two lines are perpendicular to each other. Then the angle between the lines is
The angle between two lines is 90∘, then the lines are ___ to each other.
Suresh and Ramesh saw two perpendicular lines, which intersect each other and made the following statements: Suresh: If two lines are perpendicular then the number of right angles formed between them is 2.
Ramesh: If two lines are perpendicular then the number of right angles formed between them is 4.