## What postulate states that two points determine exactly one line?

postulates&theorems. Postulate 2-1 Through any two points there is exactly one line. Postulate 2-2 Through any three points not on the same line there is exactly one plane.

**What is it called when two points are on the same line?**

Points that are on the same line are called collinear points. A line is defined by two points and is written as shown below with an arrowhead.

### Are lines that cross at exactly one point?

Intersecting lines are lines that cross each other at exactly one point, called the point of intersection.

**Does two 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 is through any two points?

Post. 2.1: Through any two points there exists exactly one line. Possible Answer: If there are two points, then there is exactly one line that passes through them.

**What is theorem and postulate?**

The difference between postulates and theorems is that postulates are assumed to be true, but theorems must be proven to be true based on postulates and/or already-proven theorems.

### What is collinear and non-collinear?

Collinear points are two or more points that lie on a straight line whereas non-collinear points are points that do not lie on one straight line.

**What is a set of collinear points?**

In Geometry, a set of points are said to be collinear if they all lie on a single line. Because there is a line between any two points, every pair of points is collinear. Demonstrating that certain points are collinear is a particularly common problem in olympiads, owing to the vast number of proof methods.

## Is it true a line and a plane intersect at 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.

**What determines a line?**

A line is a one-dimensional figure, which has length but no width. A line is made of a set of points which is extended in opposite directions infinitely. It is determined by two points in a two-dimensional plane. The two points which lie on the same line are said to be collinear points.

### How many lines can be drawn through any two points?

one line

Only one line can pass through two given points.

**Is a line contained in exactly one plane?**

Through any three non-collinear points, there exists exactly one plane. A plane contains at least three non-collinear points. 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 many planes can go through two points?

Solution. Given two distinct points, we can draw many planes passing through them. Therefore, infinite number of planes can be drawn passing through two distinct points or two points can be common to infinite number of planes.

**What is linear pair postulate?**

Linear Pair Postulate If two angles form a linear pair, then the measures of the angles add up to 180°. Vertical Angles Postulate If two angles are vertical angles, then they are congruent (have equal measures).

### Do a line and a plane intersect at exactly 1 point?

Steps for finding the intersection of the line and plane If a line and a plane intersect one another, the intersection will be a single point, or a line (if the line lies in the plane).