The letters S and N have point symmetry but not line symmetry.
A parallelogram does not have a line of symmetry.
draw line of symmetry for 20
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.
Because linear symmetry defines a line such that the shape is unchanged when REFLECTED in that line.
do it yourself, think !
Box starfish has pentaradial symmetry.
turn symmetry
starfish = pentaradial
A starfish has radial symmetry
radial symmetry
radial symmetry
Radial symmetry
Starfish tend to have pentamerous radial symmetry. In other words, the typical starfish has five lines of symmetry throughout their body. Some species have more lines because they have more arms.
Most Echinoderms have radial symmetry. Sea Urchins, Starfish, Sand Dollars, etc.
pentaradial symmetry ;)
5 lines of symmetry