Problem 2.1: Decide whether the following is a point, line, segment, ray, or none of these. [Solution]

Problem 2.2: Decide whether the following is a point, line, segment, ray, or none of these. [Solution]

Problem 2.3: Decide whether the following is a point, line, segment, ray, or none of these. [Solution]

Problem 2.4: Decide whether the following is a point, line, segment, ray, or none of these. [Solution]

Problem 2.5: Decide whether the following is a point, line, segment, ray, or none of these. [Solution]