- When two planes intersect are two lines formed?
- Can planes intersect at a point?
- What happens when 3 planes intersect?
- Can three lines intersect at more than three points?
- When two infinite planes intersect what do they form?
- What is the maximum number of points at which three lines can intersect in a plane?
- Do 2 planes always intersect?
- Do parallel lines exist?
- Why do parallel lines never intersect?

## When two planes intersect are two lines formed?

Two intersecting planes always form a line If two planes intersect each other, the intersection will always be a line.

where r 0 r_0 r0 is a point on the line and v is the vector result of the cross product of the normal vectors of the two planes..

## Can planes intersect at a point?

They cannot intersect at only one point because planes are infinite. Furthermore, they cannot intersect over more than one line because planes are flat. One way to think about planes is to try to use sheets of paper, and observe that the intersection of two sheets would only happen at one line.

## What happens when 3 planes intersect?

Form a system with the equations of the planes and calculate the ranks. Each plane cuts the other two in a line and they form a prismatic surface. … The Second and Third planes are Coincident and the first is cutting them, therefore the three planes intersect in a line.

## Can three lines intersect at more than three points?

Also, triangles are formed with only straight lines. Therefore we cannot form more than 3 triangles with the points of intersection of 3 lines.

## When two infinite planes intersect what do they form?

If two planes intersect, they intersect in a line. The line and the plane intersect in a single point. The line and the plane do not interesect. In this case they are called parallel.

## What is the maximum number of points at which three lines can intersect in a plane?

3 pointsThe maximum number of points of intersection when 3 lines are drawn in a plane, as shown, is 3 points.

## Do 2 planes always intersect?

ANSWER: Always; Postulate 2.5 states if two points lie in a plane, then the entire line containing those points lies in that plane. … The intersection of two planes can be a point. SOLUTION: Postulate 2.7 states if two planes intersect, then their intersection is a line. Therefore, the statement is never true.

## Do parallel lines exist?

Parallel Lines 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.

## Why do parallel lines never intersect?

Parallel & Intersecting lines Two lines in the same plane will always intersect unless they are parallel. Parallel lines are lines that are always the same distance apart and they never intersect. In the real world a good example of parallel lines is a railroad.