Ohio Assessments for Educators (OAE) Mathematics Practice Exam

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Which polygon has 7 sides?

Hexagon
Heptagon
Octagon
Nonagon

The correct answer is: Heptagon

A polygon with seven sides is classified as a heptagon. The term "heptagon" is derived from the Greek word "hepta," which means seven. This geometric figure is characterized by having seven straight edges and vertices. In contrast, a hexagon has six sides, an octagon has eight sides, and a nonagon has nine sides. Understanding the naming convention for polygons based on the number of their sides is crucial in geometry, as it aids in identifying and categorizing different shapes effectively. Concepts of polygons often extend into various mathematical applications, making it important to grasp these definitions clearly.