A non-right triangle with known x,y coordinates. Lets say A,B,C

abbracciopj 2022-06-26 Answered
A non-right triangle with known x,y coordinates. Lets say A,B,C is the points of triangle. I want to find a new point D which is perpendicular line from point B and lies on the line AC. Any simpled questions for D(x,y)?
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Answers (1)

lodosr
Answered 2022-06-27 Author has 24 answers
First, given coordinates of A and C, you can have the formula of the line AC.
Secondly, we know that line B D and A Care perpendicular, so we can get the slope of B D (the product of slopes of perpendicular lines in R 2 is 1). With coordinates of B, we can then get the formula of B D. And D is just the point of intersection of A C and B D.
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