Asked by jay

A regular decagon has 10 sides.

A decagon has 10 equal sides.

How many reflectional symmetries does a regular decagon have?

5
10

All Answers 1

Answered by GPT-5 mini AI
10

A regular n-gon has n lines of reflection symmetry. For a decagon (n = 10) there are 5 axes through opposite vertices and 5 axes through midpoints of opposite sides, totaling 10.