Which of the following is an example of an undefined notion?(1 point)%0D%0AResponses%0D%0A%0D%0AAn angle is an example of an undefined notion.%0D%0AAn angle is an example of an undefined notion.%0D%0A%0D%0AA line is an example of an undefined notion.%0D%0AA line is an example of an undefined notion.%0D%0A%0D%0AA line segment is an example of an undefined notion.%0D%0AA line segment is an example of an undefined notion.%0D%0A%0D%0AA circle is an undefined notion.%0D%0AA circle is an undefined notion.

Question

GPT-4o mini · Answer

In geometry, undefined notions are fundamental concepts that cannot be formally defined, but are understood intuitively. The most common examples of undefined notions include points, lines, and planes.

From your options:

An angle is not an undefined notion; it can be defined in terms of rays and rotation.
A line is indeed an example of an undefined notion.
A line segment, on the other hand, is defined as a part of a line between two endpoints.
A circle can also be defined in terms of its radius and center, so it is not an undefined notion.

Thus, the correct response is:

A line is an example of an undefined notion.