Ohio Assessments for Educators (OAE) Mathematics Practice Exam 2025 - Free Practice Questions and Study Guide

Question: 1 / 400

What is the name for a polygon with 10 sides?

Nonagon

Dodecagon

Decagon

A polygon with 10 sides is referred to as a decagon. The term "decagon" is derived from the Greek roots "dec-" meaning ten and "-gon" meaning angle, indicating that the figure possesses ten angles and ten sides.

In geometric terminology, each specific prefix designates the number of sides a polygon has. Therefore, understanding these prefixes is crucial when classifying polygons. For instance, a nonagon has nine sides, a dodecagon has twelve sides, and a hexadecagon has sixteen sides. The distinction in the prefixes helps to clearly identify and communicate the characteristics of the polygon in question.

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Hexadecagon

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