The Judicial Branch is defined and delineated by Article III of the Constitution (though the word "branch" never appears).
The judicial branch is discussed in Article III of the Constitution.
The judicial branch is tasked with the interpretation of the law.
Article III (A+)
Article I
The Legislative Branch is created via article I of the constitution. However, the legislative branch also plays a major role in article V, which concerns amending the constitution.
Article II of the Constitution.
Article 3 of the constitution
Article 111 discusses the powers of the Judicial Branch in the Constitution.
Article III
Article III (A+)
Article I of the Constitution defines the legislative branch of the U.S. government.
It is Article 1 of the U.S. Constitution that outlines the Legislative Branch. Article 2 outlines the Executive Branch, and Article 3 outlines the Judicial Branch.