Reason quantitatively. Based solely on the pattern in the table, Andre states that the number of sides of a polygon is equal to its number of angles. Is Andre's statement a conjecture or a theorem? Explain.

\begin{tabular}{|l|c|c|}
\hline
Polygon & Sides & Angles \\
\hline
Triangle & 3 & 3 \\
\hline
Quadrilateral & 4 & 4 \\
\hline
Pentagon & 5 & 5 \\
\hline
\end{tabular}



Answer :

Andre's statement is a conjecture. Let's explore why this is the case through a detailed, step-by-step analysis.

First, consider the given table of polygons:

[tex]\[ \begin{tabular}{|l|c|c|} \hline Polygon & Sides & Angles \\ \hline Triangle & 3 & 3 \\ \hline Quadrilateral & 4 & 4 \\ \hline Pentagon & 5 & 5 \\ \hline \end{tabular} \][/tex]

In this table, we observe that for each type of polygon listed, the number of sides is equal to the number of angles. Specifically:

- A triangle has 3 sides and 3 angles.
- A quadrilateral has 4 sides and 4 angles.
- A pentagon has 5 sides and 5 angles.

Given these observations, Andre reasons that the number of sides of a polygon is equal to its number of angles.

### Analysis

To understand whether Andre's statement is a conjecture or a theorem, we need to interpret the definitions of each term:

1. Conjecture: A conjecture is an educated guess or hypothesis based on limited evidence or observations. It requires proof to be established as a general truth.
2. Theorem: A theorem is a statement that has been rigorously proven based on previously established statements such as axioms and other theorems.

### Quantitative Reasoning and Pattern Recognition

Examining more polygons may help us strengthen or refute Andre's statement:

- Hexagon: A hexagon has 6 sides and 6 angles.
- Heptagon: A heptagon has 7 sides and 7 angles.
- Octagon: An octagon has 8 sides and 8 angles.

From these additional examples, we observe the same pattern: each polygon has the same number of sides and angles.

### Definition Properties of Polygons

By definition, a polygon is a closed figure formed by a finite number of line segments. Each line segment is a side, and the points where the line segments meet are the vertices. Each vertex forms an angle. Therefore, the number of vertices of a polygon is equal to the number of angles, and each side is formed by connecting these vertices.

Given the above reasoning, every polygon will inherently have an equal number of sides and angles because each side corresponds to an angle at a vertex.

### Conclusion

While Andre's statement is supported by observed patterns and logical deduction from the properties of polygons, it still begins as a conjecture since it arises from pattern recognition. However, because we can logically deduce that for any polygon, every side produces an angle, the conjecture can be deemed correct in all general cases, thereby transforming it into a theorem.

Yet, the nature of Andre's initial observation and the need for rigorous proof classify it initially as a conjecture that can be systematically proven true.

Therefore, Andre's statement is initially a conjecture based on the observed patterns and can be established as a theorem through logical deduction.