Q: When three or more lines intersect?

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A triangle? Three lines that intersect in three points.

a transversal

It's possible, but for any three lines in the same plane, there could be ether one point of intersection (unlikely) or three (more probably).

No, skew lines are not perpendicular. Perpendicular lines intersect at an angle of ninety degrees, while skew lines never intersect (think in three dimensions or higher).

In geometry, three or more lines are said to be concurrent if they intersect at a single point.

Related questions

Two lines that are not coplaner exist on two different planes. These lines do not and will not intersect by simple definition. It is however, when speaking of three or more lines, when the possibility that two or more of them may intersect.

thre lines that intersect in three points

concurrent lines

concurrent

A triangle? Three lines that intersect in three points.

its the point of concurrency

concurrent lines are In geometry, three or more lines are said to be concurrent if they intersect at a single point.

Intersecting. Usually, if there are three or more lines, they are said to be concurrent.Intersecting. Usually, if there are three or more lines, they are said to be concurrent.Intersecting. Usually, if there are three or more lines, they are said to be concurrent.Intersecting. Usually, if there are three or more lines, they are said to be concurrent.

Three or more straight lines in a plane such that they intersect pairwise.

No, only three lines can intersect at a single point.

This is true. If three straight lines are drawn, they can only intersect at two points. That is, each line will only intersect with another once.

In two dimensional space they must. In three (or more) dimensions they need not.