Скачать или смотреть Applications of PnC in Geometry | Permutations and Combinations | Grade 11 | Math | Khan Academy

In this video, we apply the concepts of permutations and combination to the world of geometry. We find out how many lines pass through a given number of non-collinear points. We then figure out the number of diagonals using the number of sides of the polygon. We also figure out the number of triangles formed using a given number of non-collinear points. Finally, we tackle the case of collinearity. What happens if some points are collinear and rest are not?

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Timestamps:
0:00 Finding number of lines through given points
2:20 Finding number of diagonals of a given polygon
4:00Finding number of triangles formed using a given set of points
4:55 Tackling the case of collinear points

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Created by
Ashish Gupta