Definition of Pentagon

a figure with five straight sides and angles

Examples of Pentagon in a sentence

At first I didn’t recognize the shape, but then I remembered it was a pentagon because it had five sides.  

The pentagon that I drew is perfectly straight, and it has the five angles and five sides it needs.  

My class was drawing three dimensional pentagons, but some were drawing four sides instead of five.  

In geometry, we learned about a five-sided polygon called a pentagon.  

The summation of the internal angles in the five-sided pentagon shape is 540°.  

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