An angle is defined as a geometric figure formed by two rays sharing a common endpoint known as the vertex. The best choice among the options is B, which highlights the significance of rays in defining an angle. Understanding this definition is crucial for studying geometry. ;
The correct definition of an angle is that it is formed by two rays sharing a common endpoint, known as the vertex. Among the provided options, B is the closest correct choice as it emphasizes the importance of rays in defining an angle. However, a complete definition would include the vertex concept.
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