Question

Let $L$ denote the set of all straight lines in a plane. Let a relation $R$ be defined on $L$ by $L_1$ $R L_2$ if and only if the straight line $L_1$ is perpendicular to the straight line $L_2$ . Then, $R$ is

• A. symmetric
• B. reflexive
• C. transitive
• D. None of these

Answer 1

Answer: (A)

symmetric

Answer 2

Answer (a) symmetric