Precisely define an angle.

Question

a. An angle is a closed plane curve with every point on the curve equidistant from a fixed point within the curve
b. An angle is the figure formed by two lines extending from the same point
c. An angle is the finite section of a line between two endpoints on the line
d. An angle is a line that extends forever in one direction for a single endpoint

Answer 1

The precise definition of an angle is:

b. An angle is the figure formed by two lines extending from the same point.

This definition correctly captures the concept of an angle as being formed by two rays (or lines) that share a common endpoint, called the vertex of the angle, and can be measured in degrees or radians based on the space between them.