a polygon
yes
a circle has infiniti lines of symmetry
A square has exactly four lines of symmetry.
Shapes do not always have lines of symmetry. For example, if you have an irregular shape, it will not have a line of symmetry. I am quite certain though that all geometric shapes have a line of symmetry.
A figure has rotational symmetry when it has 2 lines of symmetry. Wait, that's wrong. It's 2 or more lines of symmetry.Hope this helps!! =D
circle
If the figure is an image of a real heart, then there are no lines of symmetry. If it is an idealised heart, then 1.
8 has lines of symmetry.
Rotational symmetry refers to symmetry of the figure when it is rotated about a single point in the same plane. Lines of symmetry apply to reflections. You do not have lines of rotational symmetry.
Equilateral Triangles (3 lines of symmetry)Rectangles (at least 2 lines of symmetry)Squares (4 lines of symmetry)Rhombuses (at least 2 lines of symmetry)Any regular polygon (at least 5 lines of symmetry)
An equilateral triangle has exactly three lines of symmetry. It is the only shape that contains exactly three lines of symmetry.