Answer:
Any two points in a plane determine a line segment. The number of different ways to choose 2 of the 10 given points is "10 choose 2", 10C2=(10*9)/2=45. So, as a problem is stated, the answer is 45.
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Answer:
how many line segment can be drawn?
Any two points in a plane determine a line segment. The number of different ways to choose 2 of the 10 given points is "10 choose 2", 10C2=(10*9)/2=45. So, as a problem is stated, the answer is 45.