- Does a line contain at least two points?
- What do two lines intersect at?
- Where does the line intersect the XY plane?
- Can a line and a plane intersect at one point?
- Can 3 planes intersect at a point?
- Does a line extend forever?
- How do you determine if a line intersects another line?
- How do you find the point of intersection between a line and a plane?
- Does a line intersect a plane?
- How many lines can 3 Noncollinear points draw?
- What is the intersection of a plane and a line called?
- What happens when a line intersects a plane?
- How do you know if a line lies on a plane?
- Why can a line never intersect a plane in exactly two points?
- Do 2 points always create a line?

## Does a line contain at least two points?

A line contains at least two points.

If two lines intersect, then their intersection is exactly one point..

## What do two lines intersect at?

Now, where the two lines cross is called their point of intersection. Certainly this point has (x, y) coordinates. It is the same point for Line 1 and for Line 2. So, at the point of intersection the (x, y) coordinates for Line 1 equal the (x, y) coordinates for Line 2.

## Where does the line intersect the XY plane?

Well, the line intersects the xy-plane when z=0.

## Can a line and a plane intersect at one point?

The intersection of two planes is a line. … They cannot intersect at only one point because planes are infinite.

## Can 3 planes intersect at a point?

all three planes form a cluster of planes intersecting in one common line (a sheaf), all three planes form a prism, the three planes intersect in a single point.

## Does a line extend forever?

A line is infinitely many points that extend forever in both directions. Lines have direction and location and are always straight. A plane is a flat surface that contains infinitely many intersecting lines that extend forever in all directions.

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

To find the point at which the two lines intersect, we simply need to solve the two equations for the two unknowns, x and y. Finally, divide both sides by A1B2 – A2B1, and you get the equation for x. The equation for y can be derived similarly.

## How do you find the point of intersection between a line and a plane?

Answer: a) To find the intersection we substitute the formulas for x, y and z into the equation for P and solve for t. The line is contained in the plane, i.e., all points of the line are in its intersection with the plane.

## Does a line intersect a plane?

In analytic geometry, the intersection of a line and a plane in three-dimensional space can be the empty set, a point, or a line. It is the entire line if that line is embedded in the plane, and is the empty set if the line is parallel to the plane but outside it.

## How many lines can 3 Noncollinear points draw?

Four linesFour lines can be drawn through 3 non-collinear points.

## What is the intersection of a plane and a line called?

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.

## What happens when a line intersects a plane?

A given line and a given plane may or may not intersect. If the line does intersect with the plane, it’s possible that the line is completely contained in the plane as well. … If they do intersect, determine whether the line is contained in the plane or intersects it in a single point.

## How do you know if a line lies on a plane?

We observe that a straight line will lie in a plane if every point on the line, lie in the plane and the normal to the plane is perpendicular to the line. We observe that a straight line will lie in a plane if every point on the line, lie in the plane and the normal to the plane is perpendicular to the line.

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

ANSWER: Never; Postulate 2.1 states through any two points, there is exactly one line. 26. If points M, N, and P lie in plane X, then they are collinear.