Because of the circular arrangement of their parts, radially symmetrical animals do not have distinct front or back ends. They may have distinct top and bottom sides. Some examples of these animals are jellyfish, sea urchins, corals, and sea anemones. A bicycle wheel also has radial symmetry.

radial symmetry

There are several reasons why symmetry might be more important to the developing jellyfish than regenerating a lost limb. Jellyfish and many other marine animals such as sea urchins, sea stars, and sea anemones have what is known as radial symmetry.

This form of symmetry marks the body plans of many animals in the phyla Cnidaria, including jellyfish and adult sea anemones (Figureb, c). Radial symmetry equips these sea creatures (which may be sedentary or only capable of slow movement or floating) to experience the environment equally from all directions.

bilateral symmetry

Some of the animals that exhibit external asymmetry include:

• Plaice. Plaice refers to a group of flatfish that is made up of 4species (scale-eye, Alaskan, American, and European plaice).
• Wrybill.
• Fiddler Crab.
• Narwhale.
• Sperm Whales.
• Honey Badger.
• Snails.
• Pareas Iwasaki.

Here, we have a star and we can fold it into two equal halves. When a figure is folded in half, along its line of symmetry, both the halves match each other exactly….Infinite Lines of Symmetry.

Real-life examples of symmetry Reflection of trees in clear water and reflection of mountains in a lake. Wings of most butterflies are identical on the left and right sides. Some human faces are the same on the left and right side. People can also have a symmetrical mustache.

Letter A,B,C,D,E,K,M, have exactly 1 line of symmetry.

Letter H,I and X has two line of symmetry.

rectangle

A scalene triangle, a parallelogram, and a trapezium do not have any line of symmetry.

Hence, there exists no triangle with exactly two lines of symmetry.

scalene triangle