Question 16 What is a vertex of degree one called?
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What is a vertex of degree one called?
Select any one of the following options
Show answer & explanation
Answer: D. D) Padent vertex
In graph theory, a vertex with degree 1 (connected to only one edge) is called a pendant (or leaf) vertex.
Step-by-step Derivation:
Step 1: An isolated vertex has degree 0.
Step 2: A vertex of degree 1 is incident to exactly one edge and is termed a pendant (or 'padent') vertex in graph theory.
Step 3: Hence the correct option is Padent (pendant) vertex.