Question

a regular decagon has 10 sides. how many reflectional symmetries does a regular decagon have? 5 10 15 20

Explanation:

Step1: Recall symmetry property of regular polygons

A regular polygon with \(n\) sides has \(n\) lines of reflectional symmetry.

Step2: Identify \(n\) for a decagon

A decagon has \(n = 10\) sides.

Answer:

10