Frequency Polygon

Consider the following statements pertaining to a frequency polygon of a frequency distribution of a continuous variable with seven class intervals of equal width: 1. The original frequency distribution can be reconstructed from the frequency polygon. 2. The frequency polygon touches the x-axis in its extreme right and extreme left. Which of the above statements is/are correct?

Consider the following statements related to cumulative frequency polygon of a frequency distribution, the frequencies being cumulated from the lower end of the range : 1. The cumulative frequency polygon gives an equivalent representation of frequency distribution table. 2. The cumulative frequency polygon is a closed polygon with one horizontal and one vertical side. The other sides have non-negative slope. Which of the above statements is/are correct?

What do you mean by frequency distribution polygon?