1. plural of pentagon; five-sided geometric figures
2. plural of Pentagon; references to the U.S. Department of Defense headquarters building
Usage: proper noun usage

Examples

• The students drew several pentagons on their geometry worksheets.
• Regular pentagons have five equal sides and five equal angles.
• The artist incorporated pentagons into her abstract design.
• We studied the properties of pentagons in math class.
• The quilt pattern featured colorful pentagons arranged in rows.
• Pentagon officials announced the new defense policy.
• The reporter covered stories from multiple Pentagon briefings.