Geometry

Question Analysis:
This question tests your understanding of how interior angle sums relate to the number of sides in convex polygons.
The main focus is on identifying the pattern of growth.

Key Concept Explanation:
The formula is: (n − 2) × 180°
As n increases, subtracting 2 is still linear, so the total grows linearly.

Step-by-Step Solution:
Try some values:
Triangle (n = 3): (3 − 2) × 180 = 180°
Quadrilateral (n = 4): (4 − 2) × 180 = 360°
Pentagon (n = 5): 540°
Each time, 180° is added → linear growth