Question

a regular decagon has 10 sides. how many reflectional symmetries does a regular decagon have? options: 15, 20, 10, 5 (with an image of a regular decagon)

Explanation:

Step1: Regular polygon symmetry rule

A regular n-sided polygon has n reflectional symmetries.

Step2: Decagon side count

A decagon has 10 sides (n=10).

Step3: Calculate symmetries

Reflectional symmetries = n = 10.

Answer:

10