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a yin-yang symbol has point symmetry but no line symmetry so 0
A plus sign.
Perpendicular lines meet each other at right angles as for example the plus sign +
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It depends you want. For instance, if you were to draw the plus sign then all angles are 90 degrees. There are 2 lines of symmetry. Furthermore, there are 2 straight angles. To conclude there are many characteristics.
a yin-yang symbol has point symmetry but no line symmetry so 0
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If you are asking what are perpindicular lines, they are two lines that cross to form right angles, or 90 degree angles. An example of this is a plus sign (+). The two lines forming the plus sign are perpindicular to each other.
A plus sign.
Perpendicular lines meet each other at right angles as for example the plus sign +
My guess as to what you are asking is what are the two different kinds of lines? If so, the two kinds of lines are parallel and perpindicular. Parallel is two lines that have the same slope, or in other words, could go on forever and not touch. An equals sign (=) is an example of this. If you drew lines on the two lines of the equals sign, and they were straight, they would, in theory, never touch. Perpindicular lines, however, is the opposite. It is two lines that form 90 degree angles or right angles. An example of this is a plus sign (+). The two lines that form the plus sign are perpindicular lines. My guess as to what you are asking is what are the two different kinds of lines? If so, the two kinds of lines are parallel and perpindicular. Parallel is two lines that have the same slope, or in other words, could go on forever and not touch. An equals sign (=) is an example of this. If you drew lines on the two lines of the equals sign, and they were straight, they would, in theory, never touch. Perpindicular lines, however, is the opposite. It is two lines that form 90 degree angles or right angles. An example of this is a plus sign (+). The two lines that form the plus sign are perpindicular lines.
Perpendicular lines meet each other at right angles as for example the plus sign +