How do you find perimeter of a triangle with vertices AC(-6,7) BC(1,3) and CC(-2,-7)?

Question

Find perimeter of triangle using vertices.

Answer 1

Have to find the length of each side

 

The coordinate should be:

 

  A ( -6, 7 )    B ( 1, 3 ) C ( -2, -7)

 

   Use distance formula :

 

    √[( X_A - X_B)^2 + ( YA - Y_B )^2]  for length of AB

 

   and do the same for AC and BC, then add all lengths to evaluate the perimeter.