Geometry

Question Analysis:
This question tests your understanding of the general formula for finding the sum of interior angles of any polygon.
The main focus is recognizing and recalling the standard formula.

Key Concept Explanation:
A polygon with n sides can be divided into (n − 2) triangles.
Since each triangle has 180°, the total angle sum is:
(n − 2) × 180

Step-by-Step Solution:
A triangle has 3 sides → 1 triangle
A quadrilateral has 2 triangles → sum = 2 × 180 = 360°
So the pattern is:
Sum = (n − 2) × 180

Common Mistakes...