It can certainly have 0, 1 or 5.
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A geometric star with five lines of symmetry is made by connecting the corners of an equal length sided pentagon. Since the pentagon has five equal sides, each line connecting the vertices (corners) will also be equal in length. Not equal however, to the sides of the pentagon. It is also called a pentagram.It is also a polygon.
There are five lines of symmetry in a regular five-sided polygon.All of these are going from one of the tips, through the center, ending up in the middle of the side that is opposite to the tip.
A polygon with 5 sides is a pentagon
a pentagon has 5 lines of symmetry
A regular pentagon has five lines of symmetry, but a specific type of pentagon known as an irregular pentagon can have only two lines of symmetry. An example would be a pentagon where two sides are equal in length, and the angles opposite these sides are equal, creating reflectional symmetry across those two lines. However, the specific arrangement would affect the overall symmetry, so not all irregular pentagons will have exactly two lines of symmetry.