Graphic straight ray line segment

There are no two endpoints.

Represents a straight line a

AB line segment a of straight AB(BA) ray

AB line (BA)

Practice is described as a straight line ab;

Let straight line a be ray AB and line segment a;

Making line segment ab;

Connecting AB

Prolonging narration cannot prolong the extension line AB of the reverse extension line AB;

Reverse extension line segment BA

2, the nature of the line

There is a straight line after two o'clock, and there is only one straight line.

To put it simply: two points determine a straight line.

3. Draw a line segment equal to the known line segment.

(1) metric method

(2) Drawing with a ruler and a ruler

4, the line segment ` size comparison method

(1) metric method

(2) Overlapping method

5. The midpoint (bisector), bisector, quadrant, etc. of a line segment.

Definition: the point that divides a line segment into two equal lines.

Graphics:

college of business administration

Symbol: If point M is the midpoint of line segment AB, then AM=BM=AB, AB=2AM=2BM.

6, the nature of the line segment

Among the connecting lines between two points, the line segment is the shortest. Simply put, the line segment between two points is the shortest.

7. Distance between two points

The length of the line segment connecting two points is called the distance between two points.

8. Location of points and straight lines.

(1) point is on a straight line (2) point is outside the straight line.