Two perpendicular lines must cross at a 90 degree angle, like a plus sign: +
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The question is baffling. They're not different. Perpendicular lines must be intersecting lines.The only lines that are not intersecting lines are parallel lines. If two lines arenot parallel, then they must intersect, and they can be perpendicular or not.
draw two intersecting lines that are not perpendicular
A pentagon can have 0, 1 or 2 pairs of parallel lines. It can have 0 to 4 lines perpendicular to an adjacent line. A rhombus must have two pairs of parallel lines and none of them may be perpendicular to any other.
Each of the four lines is perpendicular - to two of the other lines.
'two perpendicular number lines are called'Special:Search