I have a set of x, y co-ordinates that are actually taken from hand drawings of a circle, square or a triangle. Using the set of points, I need to mathematically find if the points approximately fit a square, circle or a triangle. What is the ideal way to implement this case?
2026-03-28 09:43:40.1774691020
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Pattern matching circle, square or triangle
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You also could use Hough transform. There are large number of this implementation of different programming languages. For more clearness, I post link with web example here.
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Calculate all the slopes between pairs of points, and order them. If there are two numbers that show up repeatedly in your list, you've got a square; three, a triangle; none; a circle.
This assumes that the given points are many in number and sampled randomly from the drawing.