Cognitive Reflection Test (CRT) Practice

Question: 1 / 400

What do you call a twelve-sided polygon?

Decagon

Dodecagon

A twelve-sided polygon is referred to as a dodecagon. The term "dodecagon" derives from the Greek words "dodeca," meaning twelve, and "gon," meaning angle or corner. Thus, this term specifically indicates a polygon that has twelve angles and twelve sides.

The other options represent different types of polygons. A decagon has ten sides, a hexadecagon has sixteen sides, and an octagon has eight sides. Understanding these definitions helps clarify why dodecagon is the accurate term for a twelve-sided figure.

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Hexadecagon

Octagon

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