Gas prices rise as oil, a nonrenewable fuel source, becomes increasingly difficult to find and produce. Nonrenewable resources are used worldwide to create electricity, heat homes, power vehicles and manufacture goods.il, or petroleum, comes from the liquified, fossilized remains of plants and animals that lived hundreds of millions of years ago; once oil sources are depleted, they cannot be replaced. Oil is an energy source that the U.S. is very much dependent upon. It is used to create fuels, such as gasoline, diesel and jet fuel.
The isosceles trapezoid has one line of symmetry, the perpendicular bisector of the base. The scalene triangle has no lines of symmetry. The isosceles triangle has one line of symmetry, the perpendicular bisector of the base. The ellipse has two lines of symmetry, one along the major and one along the minor axis.he rectangle has two lines of symmetry, the perpendicular bisector of the longer sides, and the perpendicular bisector of the shorter sides. The circle has infinitely many lines of symmetry, any line going through the center. (Any diameter is a line of symmetry.) The parallelogram pictured has no lines of symmetry.
Line Symmetry. Basically, a line of symmetry is a line that divides a figure into two mirror images. The figure is mapped onto itself by a reflection in this line. A set of points has line symmetry if and only if there is a line, l, such that the reflection through l of each point in the set is also a point in the set.(May also be referred to as reflectional symmetry.). Certain figures can be mapped onto themselves by a reflection in their lines of symmetry.asically, a figure has point symmetry when it looks the same when up-side-down, (rotated 180Âº), as it does right-side-up. The number of positions in which the rotated object appears unchanged is called the order of the symmetry.