Question

Which of the following is/are example of symmetric

Options

• Δ triangle similar.

• (T₁, T₂) ∈R and (T₂, T₁) ∈R.

• (T₁, T₂) and (T₂, T₃) lie in R.

• Both Δ triangle similar and (T₁, T₂) and (T₂, T₃) lie in R.

Answer 1

(T₁, T₂) ∈R and (T₂, T₁) ∈R.

Explanation:

(T₁, T₂) ∈R ⇒ T₁ is similar to T₂

(T₂, T₁) ∈R ⇒ T₂ is similar to T₁ therefore 'R' is symmetric.