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Alexander Sinitsyn2019-01-09 23:35:56
Mathematics
Alexander Sinitsyn, 2019-01-09 23:35:56

How to find the distance between such points?

Somehow I'm dumb by midnight... or just dumb)))
5c365b0c80efb704413859.png
Coordinates A, B, C are known. Point D lies on the continuation of the line AC and CD=CB.
We need to find BD or at least the coordinates of point D.
I feel that everything should be simple, but as some old politicians would say: "Something here I am" %)

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