Sting rays have a two fold axis of symmetry which would make it closed symmetry.
"Show" is open, "and" is closed. O- is open, -pen is closed. "Closed" is closed.
a construction site?
A symmetrical open plane curve is a type of curve that remains unchanged when reflected across a central axis, indicating bilateral symmetry. Unlike closed curves, open curves do not form a complete loop and extend infinitely in at least one direction. Examples include certain types of spirals or parabolas that exhibit this symmetry. The symmetry can be visualized by folding the curve along its axis, where each side aligns perfectly.
The opposite of the adjective closed is open. The opposite of the verb closed is opened.
Both open syllables.
By living in a open water with other fish that helps them live.
Both closed syllables.
One open, one closed.
One open, one closed
Both closed.
open-closed continuum A continuum extending from an open situation to a closed situation, which describes the extent to which environmental conditions.
Photo is an open syllable word.