Find the lengths of the sides of the triangle with the indicated vertices, and determine whether the triangle is a right triangle, an isosceles triangle, or neither.
A(0,0,4), B(2,6,7), C(6,4,−8)
∣AB∣= _______
∣AC∣= _______
∣BC∣= _______
A. right triangle
B. isosceles triangle
C. neither