Geometry - Ch. 1: Basic Concepts (5 of 49) How Many Intersections are There? Example

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In this video I will calculate and find the general equation of finding the number of intersections given a certain number of lines. For example, the number of intersection(s) given 2, 3, 4, 5,..., n number of lines.

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Thank you! I had this in my math homework

mathewchakhva
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Professor, a better formula would be : n(n-1)/2. n is the # of lines.

josephdouglas
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Instead of that too many steps just follow ..for example 4 line 4C2 =6


....6 line ....6c2=15
INDIAN method ❤

rohituniverse