Ohio Assessments for Educators (OAE) Mathematics Practice Exam

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What is the number of sides in a dodecagon?

The correct answer is: 12

A dodecagon is defined as a polygon that has exactly twelve sides. The term "dodecagon" is derived from the Greek words "dodeka," meaning twelve, and "gonia," meaning angles. In geometry, each additional side defines a new polygon, and the dodecagon is specifically recognized for having twelve straight edges and twelve corresponding angles. Therefore, recognizing the prefix "dodeca-" is essential in identifying that a dodecagon refers to a twelve-sided figure.