As far as we know, two lines can be perpendicular,
or they can be parallel, but they can't be both.
Take any two lines and look at their slopes. -- If the slopes are equal, then the lines are parallel. -- If the product of the slopes is -1, then the lines are perpendicular.
It looks like a X.
These lines are perpendicular: _|
Perpendicular lines look like two straight lines that meet or intersect at a 90-degree angle. The capital letter T is an example of what they might look like.
home plate
Like this: _______________________________ _______________________________ _______________________________
It looks like a ladder with only one step, a railroad track with only one tie, or the upper-case letter ' H '.
Parallel lines are coplanar lines that never touch, their minimum distance apart being the same at any point. For example (below, Imagine if these lines went on for ever) ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ (Hint: they would never touch) Lines that are not parallel include lines such as perpendicular look like this __l__ l (they cross and form four right angles
They look like two intersecting lines that make four right angles. Like the two lines in this L.
kinda like this.... / \ / \ the lines on the top and bottom are parallel kinda like this.... / \ / \ the lines on the top and bottom are parallel
Just like this: ___________________ ____________________ parallel means they never intersect (touch)
Perpendicular is when two lines cross and form a right angle, which I hope you know what that is.