Question

sample response: an angle is defined as two rays with a common endpoint, so cab (or bac) is an angle. a line is described as an infinite set of points that extend forever in either direction, which these rays also do. what did you include in your response? check all that apply. angles are rays with a shared endpoint. lines extend forever in either direction. rays ab and ac extend forever in either direction.

Explanation:

The sample response defines an angle as two rays with a common endpoint and describes a line as extending forever in either direction. The first two statements match the definitions given in the sample response. Rays extend only in one - direction, not in either direction like a line, so the third statement is incorrect.

Answer:

Angles are rays with a shared endpoint.
Lines extend forever in either direction.