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It can be concluded that there are 21 articles. A segment is a finite part (including two endpoints) between two points on a straight line, which is different from a straight line or ray.
Segment, a general term in technical drawing, refers to one or more different lines forming a continuous or discontinuous graphic line, such as a line segment of a solid line or a line segment consisting of a double-point dash composed of "long dashes, short intervals, points, short intervals, points, and short intervals".
Connect the two points with a ruler to get a line segment. The length of the line segment is the distance between these two points.
The length of the line segment connecting two points is called the distance between the two points.
A line segment is represented by the letters A, B, or a lowercase letter that denote its two endpoints, and sometimes these letters also indicate the length of the line segment, denoted as line AB or line BA, line A. where a and b represent the two endpoints of the line segment.
Of all the lines connecting two points, the line segment is the shortest. Abbreviated as the shortest line segment between two points.
So the sum of the two sides in the triangle is greater than the third side.
In life applications, there are three main types - linking, separating, and deleting.
The link is a related link between the two in different places, and the same is true for other indicative supplements.
Separation separates two areas in the same place, as well as other areas such as depth of field and isotope.
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It can be seen as a combination question.
Since a line segment consists of six line segments, there are a total of 7 endpoints.
Among these 7 endpoints, any two endpoints can be selected to form a line segment, so if you choose two of the 7, that is, c72, the calculation can be 21.
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21 Ah, if you have time to buy an Olympiad book, most of them will be there, and if you can't do it, you can ask questions on the Internet or check it yourself, which is helpful. Learn a little more.
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There are 6 lines made up of one line segment, 5 lines made up of 2 line segments, and so on.
6 + 5 + 4 + 3 + 2 + 1 = 21.
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En is 21 articles.
I did this kind of thing when I was a kid.
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There are a total of 5 endpoints and 10 endpoints.
There are 7 points and 21 endpoints.
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There are 6 lines made up of one line segment, 5 lines made up of 2 line segments, and so on.
6 + 5 + 4 + 3 + 2 + 1 = 21.
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1.If there are five points in the middle, that is, if you add 7 points to the endpoints, there will be 21 points.
2.If you count the two endpoints five, which is the middle three, it is 10.
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Answer: There should be two points in a line segment, and 61 points on a line are 60 line segments.
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Because the distance between two points is defined as a line segment, the solution is a combination of 6 and 2: 6 5 1 2 15 (strips).
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The formula for the number of line segments is: 1+2+3+.n-2)+(n-1)=n(n-1)/2
Solution steps: It is known that there are 6 points in the problem, that is, n=6 is substituted into the formula, and 6*(6-1) 2=15 can be obtained
A: There are 6 points on a straight line, and there are 15 different line segments.
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There are two answers, which can be 10 or 21.
1. If two endpoints are included, a total of 5 points, it is divided into 4 segments, namely:
There are 4 stripes of length 1, 3 stripes of length 2, 2 strips of length 3, and 1 strip of length 4.
Therefore, it can form a line segment: 1 + 2 + 3 + 4 = 10 (strips) 2, if it does not include two endpoints, a total of 7 points, it is divided into 6 segments, that is:
There are 6 strips of length 1, 5 strips of length 2, 4 strips of length 3, 3 strips of length 4, 2 strips of length 3, and 1 strip of length 6.
Therefore, it can form line segments: 1+2+3+4+5+6=21 (strips) The line segment is represented by the letters a, b or a lowercase letter that represent its two endpoints, and sometimes these letters also indicate the length of the line segment, which is denoted as line segment ab or line segment ba, line segment a. where a and b represent the two endpoints of the line segment, as shown in the following figure:
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Arrange the questions so that every two points form a line segment.
Therefore, 2 points are selected from 6 points to form a group, c(6,2)=6*5 2=15
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You can't make this clear, because you don't know if the endpoints of the connected segment are 8 points or a total of 6 points.
How many line segments are there for every two adjacent points? For example, x.
That's x(x+1) 2 is the number of bus segments.
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1.If there are five points in the middle, that is, if you add 7 points to the endpoints, there will be 21 points.
2.If you count the two endpoints five, which is the middle three, it is 10.
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The endpoints of the two segments, plus the three points in the middle segment, make a total of 4 segments.
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Counting, how many line segments are there in the image below?
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If two endpoints are included, for a total of 5 points, it is divided into 4 segments.
Can form a line segment: 1 + 2 + 3 + 4 = 10 (strips).
If the two endpoints are not included, a total of 7 points are divided into 6 segments: 1+2+3+4+5+6=21 (strips).
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10 pcs.
There is a line segment between the two points, so there are 4 line segments of length 1 and 3 line segments of length 2 in the five points of 12345. 4321=10
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