Geometry

Question Analysis:
This question verifies understanding of a fundamental property of all convex polygons regarding their exterior angles.

Key Concept Explanation:
A crucial geometric principle states that the sum of exterior angles for any convex polygon is always 360°, regardless of the number of sides.
This applies to all simple polygons, from triangles to n-gons.

Step-by-Step Solution:
Recall the universal rule: Sum of exterior angles = 360° for any convex polygon.
A heptagon has 7 sides, but this doesn't affect the exterior angle sum.
Therefore, the sum remains 360°.

Common Mistakes:
Confusing exterior angle sum with interior angle sum.