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# How do you get a perpendicular line?

How do you get a perpendicular line? Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6. Thus, the equation of the line is y = ½x + 6. Rearranged, it is –x/2 + y = 6.

## What type of angle do perpendicular lines form?

Perpendicular lines are lines that intersect at a right (90 degrees) angle.

## How do you determine if two lines are parallel?

We can determine from their equations whether two lines are parallel by comparing their slopes. If the slopes are the same and the y-intercepts are different, the lines are parallel. If the slopes are different, the lines are not parallel. Unlike parallel lines, perpendicular lines do intersect.

## What is the perpendicular slope of?

The slopes of two perpendicular lines are negative reciprocals of each other. This means that if a line is perpendicular to a line that has slope m, then the slope of the line is -1 / m.

## What pairs of lines are perpendicular?

Two distinct lines intersecting each other at 90° or a right angle are called perpendicular lines. Here, AB is perpendicular to XY because AB and XY intersect each other at 90°. The two lines are parallel and do not intersect each other. They can never be perpendicular to each other.

## What do you call the two lines that never meet?

In geometry, parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel. … Parallel planes are planes in the same three-dimensional space that never meet.

## Are two lines perpendicular to the same line parallel?

If two planes are perpendicular to the same line, then they’re parallel to each other. If a line is perpendicular to one of two parallel planes, then it’s perpendicular to the other.

## What are five ways to prove two lines are parallel?

Ways to Prove Two Lines Parallel

• Show that corresponding angles are equal.
• Show that alternative interior angles are equal.
• Show that consecutive interior angles are supplementary.
• Show that consecutive exterior angles are supplementary.
• In a plane, show that the lines are perpendicular to the same line.

## What are two lines that are perpendicular?

Perpendicular lines are lines that intersect at right angles. If you multiply the slopes of two perpendicular lines in the plane, you get −1 . That is, the slopes of perpendicular lines are opposite reciprocals .

## What does it mean if two lines are parallel?

Parallel Lines: Definition: We say that two lines (on the same plane) are parallel to each other if they never intersect each other, ragardless of how far they are extended on either side. … A transversal of two (or more) lines is another line that intersects the two lines.

## How do you know if a slope is parallel or perpendicular?

Answer: Lines with the same slope are parallel and if the slope of one line is the negative reciprocal of the second line, then they are perpendicular.

## What happens to the slope when its perpendicular?

A perpendicular line will have a slope with the opposite reciprocal. In simpler terms, you flip the slope and change the sign, therefore, the opposite reciprocal is 4/10.

## What’s the perpendicular slope of 4?

Solution: The given line has slope m = -4. Therefore the perpendicular line’s slope is (1/4), because that is the negative reciprocal of -4.

## Where do 2 perpendicular lines intersect?

Perpendicular lines intersect at a 90-degree angle. The two lines can meet at a corner and stop, or continue through each other.

## Which two lines are equidistant and will never meet?

Parallel lines are equidistant lines (lines having equal distance from each other) that will never meet.

## Do parallel lines exist?

In spherical geometry Parallel lines DO NOT EXIST. In Euclidean geometry a postulate exists stating that through a point, there exists only 1 parallel to a given line. … Therefore, Parallel lines do not exist since any great circle (line) through a point must intersect our original great circle.

## What are the two lines perpendicular to the same plane?

In a plane, if two lines are perpendicular to the same line, they are parallel. In space, if two lines are perpendicular to the same line, they are parallel.

## Can two lines perpendicular to a third line be perpendicular to each other?

If two lines are perpendicular to the third line then those two lines are parallel to each other as per the property of the parallel lines they would never meet. Since, they do not touch or intersect each other they are said to be parallel to each other.

## Are two lines perpendicular to a third line parallel?

In relationship to parallel lines

If two lines (a and b) are both perpendicular to a third line (c), all of the angles formed along the third line are right angles. Therefore, in Euclidean geometry, any two lines that are both perpendicular to a third line are parallel to each other, because of the parallel postulate.

## When can you say that two lines are perpendicular?

Explanation: Two lines are perpendicular if and only if their slopes are negative reciprocals. To find the slope, we must put the equation into slope-intercept form, , where equals the slope of the line.

## What happens when a transversal crosses parallel lines?

When two or more lines are cut by a transversal, the angles which occupy the same relative position are called corresponding angles . When the lines are parallel, the corresponding angles are congruent . … If two parallel lines are cut by a transversal, then the alternate interior angles formed are congruent .

## Are parallel lines equal?

Parallel lines are equidistant lines (lines having equal distance from each other) that will never meet. These are some examples of parallel lines in different directions: horizontally, diagonally, and vertically. Another important fact about parallel lines: they share the same direction.

## What are the three examples of parallel lines?

In real life, while railroad tracks, the edges of sidewalks, and the markings on streets are all parallel, the tracks, sidewalks, and streets go up and down hills and around curves. Those three real-life examples are good, but not perfect, models of parallel lines.

## What are parallel lines examples?

Two or more lines that lie in the same plane and never intersect or meet each other are known as parallel lines. For example, let us assume two tall buildings in a neighborhood. They seem so tall and straight. The answer to such questions lies with the concepts of parallel lines. …