Illustrate, if possible, each one of the following with a rough diagram:
A polygon with two sides.

Answer

To solve the question of illustrating a polygon with two sides, we need to understand the definition of a polygon and the requirements for its formation.

### Step-by-Step Solution:

1. **Understanding a Polygon**: A polygon is defined as a closed figure formed by straight line segments. The segments are called sides, and the points where the sides meet are called vertices.

2. **Minimum Number of Sides**: The smallest polygon is a triangle, which has three sides. This means that a polygon cannot be formed with just two sides because it would not be closed.

3. **Attempt to Draw**: If we try to draw a figure with only two sides, we can create two straight lines. However, these two lines cannot connect back to each other to form a closed shape without adding a third line.

4. **Conclusion**: Since we cannot create a closed figure with only two sides, it is concluded that it is not possible to illustrate a polygon with two sides.

5. **Final Statement**: Therefore, we write: "It is not possible to draw a polygon with only two sides."