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www.reference.com/article/perpendicular-lines-3c3dd1850ef1c83a

Perpendicular lines are lines that intersect one another at a 90 degree angle. If two lines are perpendicular, then multiplying the slopes of the two lines together equals -1.

www.reference.com/world-view/perpendicular-lines-e134ce18b32db971

Perpendicular lines are those that form a right angle at the point at which they intersect. Parallel lines, though in the same plane, never intersect.

www.reference.com/article/equation-line-5aaca40b6aa91c64

To find a line's equation, identify two of the points through which the line passes, and then use the "x" and "y" coordinates to find the slope of the line, or the rate at which it climbs or falls. Use the slope to find the line's intersection with the y-axis.

www.reference.com/world-view/example-perpendicular-lines-real-life-89d9d964afa39708

One common example of perpendicular lines in real life is the point where two city roads intersect. When one road crosses another, the two streets join at right angles to each other and form a cross-type pattern. Perpendicular lines form 90-degree angles, or right angles, to each other on a two-dime

www.reference.com/article/two-perpendicular-lines-intersect-ab725b252801b3df

In Euclidean geometry, two perpendicular lines intersect at a single point called the intersection. If the two lines are y = ax + b and y = cx + d, then their intersection has x coordinate (d-b)/(a-c) and y coordinate [a(d-b)/(a-c) + b].

www.reference.com/article/perpendicular-parking-353f000d193ddfa3

Perpendicular parking is done at a 90-degree angle to the curb. Perpendicular spaces make maneuvering the vehicle more difficult than angle parking, but the procedure requires fewer steps than parallel parking.

www.reference.com/article/slope-line-perpendicular-x-axis-232a74b9013c84bc

A line that is perpendicular to the x-axis has an undefined slope. All of the points on such a line have the same x-coordinate. If the value of x never changes, then the formula for slope, (y2 - y1)/(x2 - x1), has a denominator of zero, which is mathematically undefined.

www.reference.com/article/write-perpendicular-lines-intersect-form-right-angles-form-f7f0d76a7d896f03

The phrase "perpendicular lines intersect to form right angles" can be turned into an if-then statement by saying: If perpendicular lines intersect, then the lines form right angles. It can also be phrased as: If two lines form right angles, then the lines are perpendicular.

www.reference.com/article/perpendicular-bisector-e7092f296f281502

A perpendicular bisector is a line that cuts across the midpoint of a given line segment at a 90-degree angle. It divides the line segment into two equal parts. A common method for drawing perpendicular bisectors uses a compass and straight edge or ruler.

www.reference.com/article/electric-field-lines-equipotential-perpendicular-bb2ac3e14afd7ea1

Electric field lines are not equipotential because the equipotential lines are perpendicular to the electric field lines. The equipotential lines are lines that denote everywhere that has the same electric potential, or is subject to the same electric field.

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