# Can a plane intersect a line in a line?

## Can a plane intersect a line in a line?

As long as the planes are not parallel, they should intersect in a line.

What is it called when a line and a plane intersect?

the point of intersection of a line and a plane is called the foot of the line. lines and planes postulates. – if a line intersects a plane not containing it, then the intersection is exactly one point. – if two planes intersect, their intersection is exactly one line.

Can a line intersect a plane in exactly 2 points?

The statement “a line can never intersect a plane at exactly two points” is either an axiom in some formalization of Euclidean geometry or follows so directly from one or two other axioms in the system that the answer seems empty of meaning, a restatement of definitions (as in some of the good answers here).

### How do you determine if a line intersects a plane?

Finding the intersection of a line and a plane

1. substitute the values of x, y and z from the equation of the line into the equation of the plane and solve for the parameter t.
2. take the value of t and plug it back into the equation of the line.

How do you tell if a line is on a plane?

Find two points on your line and determine whether they satisfy the equation of your plane. If both points on the line satisfy the plane equation, the line is in the plane. If only one point satisfies the plane equation, the line intersects the plane but doesn’t lie in it.

Why do 2 points determine a line?

Two distinct points determine exactly one line. That line is the shortest path between the two points. Bricklayers use these properties when they stretch a string from corner to corner to guide them in laying bricks.

#### Why can a line never intersect a plane in exactly 2 points?

If you pick two points on a plane and connect them with a straight line then every point on the line will be on the plane. Given two points there is only one line passing those points. Thus if two points of a line intersect a plane then all points of the line are on the plane.

Do two points determine a line?

Two distinct points determine exactly one line. That line is the shortest path between the two points. Two points also determine a ray, a segment, and a distance, symbolized for points A and B by AB (or BA when B is the endpoint), AB, and AB respectively.

Is it true that a line segment has two endpoints?

A line segment has two endpoints. A ray is a part of a line that has one endpoint and goes on infinitely in only one direction. You cannot measure the length of a ray. A ray is named using its endpoint first, and then any other point on the ray (for example, →BA ).

## Does a line lie on a plane?

If two points lie in a plane, then the line containing them lies in the plane. If two planes intersect, then their intersection is a line.

How do you know if a line intersects a plane?

Do 2 points determine a line?

Any two distinct points in a plane determine a line, which has an equation determined by the coordinates of the points.

### What happens when two planes intersect in one point?

If a line intersects a plane that does not contain it, then it intersects the plane in exactly one point. Any three points lie in at least one plane, and any three points not on the same line lie in exactly one plane. If two planes intersect, their intersection is a line.

What is the intersection of 3 planes called?

What is the intersection of 3 planes called? Just two planes are parallel, and the 3rd plane cuts each in a line. The intersection of the three planes is a line. The intersection of the three planes is a point. Each plane cuts the other two in a line. Two Coincident Planes and the Other Intersecting Them in a Line.

How is the point of intersection of a line determined?

So the point of intersection can be determined by plugging this value in for t in the parametric equations of the line. Here: x = 2 − ( − 3) = 5, y = 1 + ( − 3) = − 2, and z = 3 ( − 3) = − 9. So the point of intersection of this line with this plane is ( 5, − 2, − 9).

#### What is the angle between the line and the plane?

And the intersection point is: (0.43 , 5 , 0.29). The angle between the line and the plane can be calculated by the cross product of the line vector with the vector representation of the plane which is perpendicular to the plane: v = 4i + k.