Q: What is Golden Triangle in Indian Constitution ?

Ans: Maneka Gandhi v. Union of India, AIR 1978 SC 597, was a landmark decision of the Supreme Court of India in which the Court significantly expanded the interpretation of Article 21 of the Constitution of India. It overruled A. K. Gopalan v. State of Madras, which had implied the exclusiveness of fundamental rights, and established a relationship between Articles 14, 19, and 21 of the Constitution (known as the 'golden triangle' or 'trinity'),  holding that a law depriving a person of 'personal liberty' must not violate any of them.  Once again overruling A. K. Gopalan, the Court in this case held that a 'procedure' under Article 21 of the Constitution cannot be arbitrary, unfair, oppressive, or unreasonable.