6.  Which of the following objects illustrates a plane?*1 pointstickmirrortip of a penciledge of a paper

To determine which object illustrates a plane, we need to understand what a mathematical plane is. A plane is a flat, two-dimensional surface that extends infinitely in all directions.

Analyzing the Options:

1. Stick: A stick is a one-dimensional object; it has length but lacks width and does not illustrate a plane.

2. Mirror: A mirror typically has a flat surface which could be called a plane, but it may not extend infinitely.

3. Tip of a pencil: The tip of a pencil is also a point, which is a zero-dimensional object and does not represent a plane.

4. Edge of a paper: The edge of a piece of paper is one-dimensional; it is not flat in the sense of extending infinitely.

Conclusion:

The best choice among the options provided is the mirror, as it presents a flat surface, which can be considered a representation of a plane in a practical sense, even though it does not extend infinitely.

Final Answer:

Mirror illustrates a plane.