Correct option is D
Concept:
A frequency polygon is a graphical representation of a frequency distribution. It is constructed by joining the midpoints of the tops of the bars (in a histogram) with straight lines. This creates a many-sided closed figure that connects the endpoints back to the horizontal axis, forming a polygon.
Explanation:
- A frequency polygon is not a square or a rectangle, as it does not have fixed angles or equal sides.
- It is not a bar chart, as a bar chart represents data with rectangular bars rather than lines connecting midpoints.
- A frequency polygon is a closed figure because its ends are connected back to the horizontal axis, completing the polygon.
Correct Answer:
(D) closed figure
