Problema Solution
Is the triangle with the vertices A(5,2)B(0,6) and C(-8,-4) a right angle?
Answer provided by our tutors
AB = √( 5^2 + 4^2) = √( 25 + 16) = √41
AC = √( 13^2 + 6^2) = √205
BC = √( 8^2 + 10^2 ) = √164
AC^2 = 205
AB^2 + BC^2 = 41 + 164 = 205
then ABC is rectangle in