The Federal Aviation Administration (FAA) shares the Environmental Protection Agency's (EPA) concerns about lead emissions from small aircraft. Owners and operators of more than 200,000 piston-engine aircraft operating in the United States rely on aviation gasoline (avgas) to power their aircraft.
Symmetry (noun). a due proportion of the several parts of a body to each other; adaptation of the form or dimensions of the several parts of a thing to each other; the union and conformity of the members of a work to the whole. Symmetry (noun).
Answer Symmetrical is a word used to describe an object or place that has two identical halves in both shape and size.Usually a human face,an egg,a ball,a pentagram,geometrical figures that sort of thing. Symmetrical means, a shape or figure cut to where the same shape/s is on both sides.