Decagon

/ˈdekəɡɑːn/

Definition 1 of 1

Pro Tip 1/3

Commonly used in mathematics to describe a ten-sided polygon, especially in geometry lessons.

For her homework, she had to calculate the interior angles of a decagon.

Pro Tip 2/3

A 'regular decagon' has all sides and angles equal, while an 'irregular decagon' does not.

A stop sign is an example of an irregular octagon, not a decagon.

Pro Tip 3/3

A convex decagon means all points on the interior angles point outward, with no indentations.

Convex decagons are often used in tiling patterns.

Humans forget easily. That's why you should download WordUp: Smart reminders, word games, AI practice, and much more!

As you browse the web instantly look up words you don’t know.