Circle, ellipse, rectangle, square, parallelogram, rhombus, trapezoid, isosceles triangle, equilateral triangle, any regular polygon.
triangle
Muhammad Ali
oh la ta don
Some letters, like A are left-right symmetrical but not up-down symmetrical. Some letters, like B, C, or D are up-down symmetrical but not left-right. Letters like H, I and O are both.
natural gas
It can be in some cases.
not all, but some
Technically seen, symmetrical animals do not exist. If you take an image of an animal/face/organism, and mirror it with Photoshop on the supposed line of symmetry, you will find that the end result, no matter how well edited, will look non-natural. To be symmetrical to a half, the genes of the other half have to be exactly the opposite. There are no known scientific cases where "inverse" genes on one half have been found, so, in short, the answer to your question is: There are no "symmetrical animals.
Plane figures. There are infinitely many of them - some regular, others irregular.
Most light bulbs are symmetrical because it is easier to manufacture symmetrical objects, and because the light from a symmetrical bulb is emitted in a symmetrical pattern. However, light bulbs do not have to be symmetrical and some non-symmetrical bulbs are made for special purposes. Generally, it is only symmetrical across only one axis. If you divide from globe to base in the direct center, the other half should be the same.
all they are is realistic figures named after some specific landmark or historical site
In some fonts, yes; in other fonts, no.