Lines that go up and down.... a tip to remeember this is: horizontal lines go across( like the horizon.. sunset..) so try to remember that Two lines that cross each other, making four 90 degree angles. This would be a + sign or a X if turned to the side. == ==
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lines and line segments
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.
The lines that cross at a 90 degree angle are called Perpindicular lines.
no, a perpindicular is two lines with one interseption and where the lines meet they create 4 90 degree angles the lines create a t shepe.
An line that is not perpindicular to the other line makes an acute or obtuse angle Oblique lines are not parallel or perpendicular which would be lines that form acute or obtuse angles at the point of intersection.