Solve a Triangle Given its Vertices

Online calculator to solve a triangle given the coordinates of its vertices. This calculator calculates all three angles and three sides of the triangle.

How to use the calculator

Enter the x and y coordinates of the three vertices A, B and C of the triangle and press "calculate". The outputs are the lengths of the three sides AB, BC ans CA and the sizes of the three angles A, B, and C of the triangle.

A ( , )
B ( , )
B ( , )

Length of Side AB =
Length of Side BC =
Length of Side CA =
Angle A =
Angle B =
Angle C =

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Updated: February 2015

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