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# What are perpendicular lines in geometry?

Updated: 12/17/2022

Wiki User

12y ago

Lines that intersect at right angles

Wiki User

12y ago

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Q: What are perpendicular lines in geometry?
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### Can perpendicular lines be intersecting lines?

In Euclidean plane geometry, two lines which are perpendicular not only can but must intersect. (I believe the same is true for elliptic geometry and hyperbolic geometry.)

### Can two lines intersects and be perpendicular?

In Euclidean plane geometry, two lines which are perpendicular not only can but must intersect. (I believe the same is true for elliptic geometry and hyperbolic geometry.)

### What is the perpendicular line do in geometry?

Perpendicular lines intersect at right angles.

### Are perpendicular lines parrelelines?

They are parts of geometry

### Types of lines used in geometry?

Line segments, perpendicular lines, and intersecting lines.

### What are 4 things in geometry that determine a plane?

perpendicular lines

yes

### Would perpendicular lines have negative or positive slopes?

I believe they have Negative Slopes as stated by my Geometry Book. "Perpendicular Lines Have Slopes Which Are Negative ___"

### Will perpendicular lines ever meet?

By definition, perpendicular lines are those which meet in a right angle. So, yes, they have to meet in order to be "perpendicular". Parallel lines may, or may not, meet, depending on how you choose your axioms. In Euclidean geometry, parallel lines never meet. In certain types of non-Euclidean geometry, they can meet.

### How can you determine if two lines are perpendicular?

If the angle formed between the intersecting lines are 90o then the two lines are perpendicular. In 2D coordinate geometry, a perpendicular line has a slope equal to the negative reciprocal of the original line.

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### What are three methods to prove that two lines are parallel?

In analytical geometry (geometry with numbers for coordinates), the easiest method is to show that they have the same slope.You could also prove that the distance between the lines, at different parts, is the same (draw a perpendicular to one of the lines).In analytical geometry (geometry with numbers for coordinates), the easiest method is to show that they have the same slope.You could also prove that the distance between the lines, at different parts, is the same (draw a perpendicular to one of the lines).In analytical geometry (geometry with numbers for coordinates), the easiest method is to show that they have the same slope.You could also prove that the distance between the lines, at different parts, is the same (draw a perpendicular to one of the lines).In analytical geometry (geometry with numbers for coordinates), the easiest method is to show that they have the same slope.You could also prove that the distance between the lines, at different parts, is the same (draw a perpendicular to one of the lines).