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

- In a regular decagon, there are 10 reflectional symmetries.

Reflectional symmetry or Line of symmetry divides a figure into two equal halves so that if you flip the half image over the line of symmetry, the figure would look same.

A regular decagon has 10 vertices and 10 edges.

where 10 vertices forms 5 lines of symmetry.

and 10 edges forms 5 lines of symmetry.

⇒Total lines of symmetry in a decagon =5+5= 10

Thus, In a regular decagon, there are 10 reflectional symmetries.

area = length x width

length = 2 x width

32 = 2 x width x width

32 = 2 x width^2

36 = width ^2  

width = 6

length = 12

area is 32

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36

step-by-step explanation: