Question

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 segment is an example of an undefined notion.%0D%0AA line segment 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 circle is an undefined notion.%0D%0AA circle is an undefined notion.

Answer 1

In geometry, undefined notions are the foundational concepts that are not formally defined using other terms. The most common examples of undefined notions in geometry include points, lines, and planes.

From your options, the proper answer would be:

- **A line is an example of an undefined notion.**

Lines, points, and planes are typically considered undefined terms in the study of geometry.