Problem 1.1: Is the following figure a curve, closed curve, simple closed curve, polygon, or none of these? [Solution]

Problem 1.2: Is the following figure a curve, closed curve, simple closed curve, polygon, or none of these? [Solution]

Problem 1.3: Is the following figure a curve, closed curve, simple closed curve, polygon, or none of these? [Solution]

Problem 1.4: Is the following figure a curve, closed curve, simple closed curve, polygon, or none of these? [Solution]

Problem 1.5: Is the following figure a curve, closed curve, simple closed curve, polygon, or none of these? [Solution]

Problem 1.6: If a polygon has 6 vertices, what is its general name? [Solution]

Problem 1.7: If a closed curve consists entirely of segments, is it a polygon? [Solution]