The length of the line segment can be measured, and the length of the measured line segment is correct. A line segment is a finite part between two points on a straight line. Connect these two points with a ruler to get a line segment. The length of the line segment connecting two points is called the distance between these two points.
Line segments can measure the length. A line segment is a limited part between two points on a straight line. Connect these two points with a ruler to get a line segment. The length of the line segment connecting two points is called the distance between these two points. Of all the straight lines connecting two points, the line segment is the shortest.
Line segment properties:
1. Of all the straight lines connecting two points, the line segment is the shortest. It is called the shortest line segment between two points.
2. So the sum of two sides of a triangle is greater than the third side.
Line segment characteristics:
1, the length is limited and can be measured;
2. There are two endpoints;
3. Symmetry;
The straight line between two points is the shortest distance between them.
Extended data:
A straight line consists of countless points. A straight line is a part of a surface and then constitutes a body. There is no end point, it extends infinitely to both ends, and the length cannot be measured. A straight line is an axisymmetric figure.
It has countless axes of symmetry, one of which is itself, and all lines perpendicular to it (there are countless axes of symmetry). There is only one straight line between two non-overlapping points on the plane, that is, two non-overlapping points determine a straight line. On the sphere, countless similar straight lines can be made after two points.
The field measurement steps of traverse measurement are as follows:
1, site selection and sign setting.
2. Measuring the side length of a conductor The side length of a conductor can be measured with a calibrated steel ruler. Generally, the method of round-trip measurement is adopted, and the relative error should not be greater than 1/3000. Length correction, temperature correction, height difference correction or inclination correction. When measuring the side length of conductor with photoelectric rangefinder, various corrections should also be made.
3. Measuring the corner of the conductor The corner of the conductor is the horizontal angle formed by two adjacent conductor sides at the conductor point. The rotation angles of conductors are divided into left and right angles. The horizontal angle on the left side of the conductor direction is called the left angle and the right angle is called the right angle.