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.
Points A, B, and C lie on a line. Point A is between points B and C. Starting at point A and going past point B, you have ray AB. Starting at point A and going past point C, you have ray AC. If you think of angle BAC, it is a straight angle of 180 degrees. You have the two rays AB and AC forming a line and an angle.
