Geometry

Question Analysis:
This algebra-based question connects the general interior angle formula to a variable expression.
The main focus is translating between algebra and known formulas.

Key Concept Explanation:
Sum of interior angles of a polygon with n sides: (n - 2) × 180°

Step-by-Step Solution:
(6 - 2) × 180 = 720°
4x + 360 = 720
4x = 360
x = 90

Common Mistakes:
Plugging in n = 6 into the algebraic expression
Mixing up i...